Head-to-head · Best Gas Grills

Napoleon Prestige 500 RSIB vs Weber Spirit II E-310

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Napoleon Prestige 500 RSIB and Weber Spirit II E-310 score essentially the same (4.6 vs 4.6). Pick the one whose trade-offs match your priorities — the strengths and watch-outs below are where they actually differ.

Ranked #3 in Best Gas Grills

Napoleon Prestige 500 RSIB

4.6

$1,599

Napoleon's Prestige 500 RSIB is the steakhouse weapon in this lineup. The 1,000°F ceramic infrared side burner sears thick ribeyes the way a Weber simply can't, the 18,000 BTU rear rotisserie burner spins whole chickens to crisp-skinned perfection, and AmazingRibs gave it their full Platinum Medal at 5/5. Built from 304 stainless steel with a lifetime cookbox warranty, the Prestige 500 is the grill for hosts who care about searing and rotisserie cooking. It's not the easiest to assemble and the warming rack is fragile, but the cooking-feature set at this price has no real competitor.

Strengths

— 14,000 BTU ceramic infrared side burner reaches over 1,000°F for steakhouse-grade searing — hotter than any sear zone on a Weber
— 18,000 BTU rear infrared rotisserie burner plus included rotisserie motor, forks, and spit handle whole chickens and prime-rib roasts out of the box
— Solid 304 stainless steel cookbox and lid for long-term outdoor durability — AmazingRibs awarded it a Platinum Medal at 5/5

Watch-outs

— Cast-iron warming rack warps if you forget to remove it before lighting the rear rotisserie burner
— Small disposable drip pan fills fast with fatty meats — plan on emptying after every long cookout
— Cabinet doors are notoriously fiddly during assembly per multiple owner reviews

$1,599 · Check Price on Amazon Full review →

Ranked #2 in Best Gas Grills

Weber Spirit II E-310

4.6

$549

The Spirit II E-310 is the gas grill almost every editorial outlet hands the 'best for most people' badge. Three 10,000 BTU burners cover 424 square inches with even, repeatable heat; Bob Vila gave it 9/10 and AmazingRibs awarded its Platinum Medal. At under $600 it sits in the price range most first-time buyers actually consider, and Weber's 10-year warranty plus the GS4 platform mean it cooks like a grill twice its price and survives like one. It's the safe choice — and after looking at every competitor in this category, that's also the smart choice for a household of two to four.

Strengths

— Three 10,000 BTU stainless steel burners deliver the evenly heated 424 sq in primary surface that earned it 9/10 from Bob Vila and a Platinum Medal from AmazingRibs
— GS4 grilling system bundles Snap-Jet ignition, Flavorizer bars, and the improved grease tray — the platform Weber, Wirecutter, Cook's Illustrated, and Serious Eats all called best-in-class at the price
— Porcelain-enameled cast-iron grates hit 500°F in ten minutes and hold sear marks comparable to grills three times the price

Watch-outs

— No side burner — the Spirit II E-315 (added side burner) is the closest 'plus' option but adds $130
— Open-cart design leaves the propane tank visible from the front, which looks utilitarian against the cabinet-style Char-Broil and Napoleon competitors
— 30,000 total BTU caps maximum sear temperature below Genesis's dedicated sear zone — fine for burgers, less ideal for thick-cut steaks

$549 · Check Price on Amazon Full review →

How they stack up

Napoleon Prestige 500 RSIB

Beats the Weber Genesis E-435 on side burner output (14,000 BTU infrared vs 12,000 BTU conventional), rotisserie kit (Napoleon includes one, Weber doesn't), and warranty length (lifetime cookbox vs 12 years). Loses to the Weber Genesis E-435 on customer service depth and assembly ease. Costs roughly a third of the Weber Summit FS38 S while offering most of the searing and rotisserie capability for hosts who don't need the Summit's 681-square-inch capacity.

Weber Spirit II E-310

Sits one tier below the Weber Genesis E-435 on burner count, total cooking area, and warranty length, and costs about a third as much. Versus the Char-Broil Performance TRU-Infrared 4-Burner Cabinet, the Spirit gives up infrared flare-up control and a side burner but wins on grate material, warranty, and resale value. For buyers who want all five burners and a top-down infrared broiler instead, the Weber Summit FS38 S is the same Weber pedigree with seven times the price tag.

Specs side-by-side

Spec	Napoleon Prestige 500 RSIB	Weber Spirit II E-310
Burners	4 main + 1 infrared side + 1 infrared rear	3 main
Total BTU	66,000 BTU/hr	30,000 BTU/hr
Primary Cooking Area	500 sq in	424 sq in
Total Cooking Area	760 sq in	529 sq in
Grate Material	9.5mm stainless steel rod with WAVE pattern	Porcelain-enameled cast iron
Ignition	JETFIRE individual burner	Snap-Jet (battery)
Fuel Type	Liquid Propane	Liquid Propane
Warranty	Lifetime cookbox/lid/grates, 15-year remaining parts	10-year limited (cookbox, lid, burners, Flavorizer bars)

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