2025 Grand Design Reflection 337RLS vs 2024 Forest River Cardinal 390FLX

Detailed Comparison

Two noteworthy RVs face off: the 2025 Grand Design Reflection 337RLS and the 2024 Forest River Cardinal 390FLX. From dimensions to amenities, here's the full breakdown.

Dimensionally, you're looking at 42.0 ft for the Grand Design Reflection 337RLS and 39.0 ft for the Forest River Cardinal 390FLX. The Grand Design Reflection 337RLS carries an extra 900 lbs, which affects tow vehicle requirements and fuel economy.

Capacity-wise, expect to sleep 7 in the Grand Design Reflection 337RLS versus 8 in the Forest River Cardinal 390FLX. With 3 and 4 slide-outs respectively, the parked floor plans differ significantly.

Tank capacities are a key off-grid consideration. The Grand Design Reflection 337RLS carries 56 gal of fresh water, 47 gal gray, and 39 gal black. The Forest River Cardinal 390FLX offers 66 gal fresh, 41 gal gray, and 42 gal black. The Forest River Cardinal 390FLX has the edge for extended dry camping.

Budget-wise, the Grand Design Reflection 337RLS is listed at $141,000 compared to $142,000 for the Forest River Cardinal 390FLX.

For family camping trips, the larger floor plan and additional berths make a real difference. For boondocking, the model with superior solar and battery setup will keep you comfortable off the grid longer. If you're going full-time, the larger tanks and more robust build quality matter enormously.

Whichever you choose, you'll be getting a capable rig. Just make sure to inspect one in person before signing.