DuroMax XP13000EH

Probably the most-reviewed big portable on the internet — 24,000+ ratings averaging 4.7 — and the default r/Generator answer for 'cheap whole-house backup through an interlock.' 9,500 running watts on gasoline (8,500 on propane), a 50-amp outlet, remote-start key fob, and a 12-hour tank for around a grand is a spec sheet nothing else matches. Owners routinely run entire homes including central AC during hurricanes. It is not subtle: expect 75+ real-world dB, a 211-lb frame, and open-frame vibration. The complaint file is proportionate to the sales volume: occasional oil leaks and QC escapes out of the box, a Westinghouse support line that owners describe as slow to days-long, and carb gumming if stored wet. The current 'DFc' revision adds a CO sensor. Buy it, change the skimpy break-in oil early, and store it dry.

The Costco tri-fuel that made natural-gas backup a thousand-dollar proposition. The T07571 runs 7,500 watts on gasoline, 6,750 on propane, and 5,500 on natural gas, ships with both LP and NG hoses in the box, and has a 50-amp outlet — which is why r/Generator treats it as the default budget answer to 'I want to hook a portable to my gas meter.' Owners praise the honest hardware: electric start, 8-gallon tank, sturdy 213-lb frame, and a 3-year warranty that beats Predator's 90 days. The recurring complaints: Firman customer service is slow — weeks-long waits for warranty parts are the most common thread — NG output is a real 27% derate, it's a loud 74 dB open frame, and low NG line pressure causes surging just like every NG portable. Costco's return policy is frequently cited as the real warranty.

The big-box storm generator: when a hurricane is three days out, this is what's stacked on pallets at Home Depot, and that availability is genuinely part of its value. 8,000 running watts, 10,000 starting via PowerRush, electric start, COsense shutdown, and an L14-30R for interlock feeding — a complete storm kit under $1,000 from a brand every service shop knows. Owner reports are solid on power delivery: it carries fridges, window ACs, well pumps, and furnace blowers simultaneously. The honest ledger: it's an open-frame roarer (Generac publishes no dB figure; owners report it's loud), non-inverter power means owners keep sensitive electronics on a UPS, it's gasoline-only with a thirsty 420cc engine, and Generac portables were hit by recalls (2022 handle pinch; an April 2026 carburetor fuel-leak recall on certain GP units) — check your serial. Runs forever with oil changes, per multi-year owners.

The r/Generator power-user pick: hook it to your home's natural gas line through a quick-connect and you have effectively unlimited runtime without storing a drop of gasoline — the practical middle ground between a portable and a $12,000 standby install. On gasoline it makes a huge 11,500 running watts; the honest math is the NG derate to 9,500 running watts, still enough for most whole homes via the 50A outlet and an interlock. Remote start, CO sensor, and a 9.5-gallon tank round it out. Owner notes: NG performance depends on your line pressure — undersized gas plumbing causes surging and hard starts, the most common complaint thread — plus it's a 230-lb beast, mid-70s dB loud, and Westinghouse support remains the weak link. Registered owners report solid 3-year warranty coverage when they persist.

One of the best-selling generators ever made, and the archetype of the 'good enough for everything' budget dual fuel. Electric start, RV-ready TT-30R outlet, propane capability out of the box, and nearly a decade of owner history at around $550 — the review count across Amazon and Walmart is enormous and consistently positive. Owners run travel trailers, job sites, and essential-circuit extension-cord backup, and the 224cc engine has a reputation for starting after years of neglect (on propane especially, since there's no carb to gum). Known quirks from the threads: it's a 68 dB droner that campground quiet hours won't love, output on propane drops about 10%, there's no 240V so interlock users look elsewhere, the fuel selector and petcock feel plasticky, and cold-weather propane starts sometimes need a second try. Champion's phone support gets rare-for-the-industry praise.

Generac's premium inverter was built to beat Honda's EU3000iS on paper — more starting watts, electric start, a PowerDial that combines start/run/stop in one twist, and a digital dashboard showing watts and runtime — and owner reviews suggest it largely succeeds at 50-52 dB. Job-site users like the steel enclosure; tailgaters like that it's genuinely conversation-quiet in economy mode. It starts 13.5k RV ACs and the 30A L5-30R twist-lock feeds RV adapters cleanly. The persistent owner complaints: 109 pounds with no wheels and only two handles — moving it solo is miserable and a wheel-kit is the first accessory everyone buys; the carburetor demands fuel treatment before storage; and a 2023-era recall on certain units (stator faults causing fire risk) rattled confidence, though current production is clear. At street prices near $1,250 it undercuts what the equivalent Honda cost by nearly half.