2024 Keystone Montana 3791RD vs 2025 Keystone Alpine 3700FL

Detailed Comparison

Comparing the 2024 Keystone Montana 3791RD to the 2025 Keystone Alpine 3700FL reveals some interesting trade-offs that could influence your buying decision.

In terms of footprint, the Keystone Montana 3791RD stretches 40.5 ft while the Keystone Alpine 3700FL spans 37.5 ft. Weight-wise, the Keystone Montana 3791RD is the lighter rig at 10,300 lbs versus 10,800 lbs.

Capacity-wise, expect to sleep 10 in the Keystone Montana 3791RD versus 4 in the Keystone Alpine 3700FL. With 1 and 2 slide-outs respectively, the parked floor plans differ significantly.

Tank capacities are a key off-grid consideration. The Keystone Montana 3791RD carries 68 gal of fresh water, 64 gal gray, and 50 gal black. The Keystone Alpine 3700FL offers 72 gal fresh, 41 gal gray, and 49 gal black. The Keystone Alpine 3700FL has the edge for extended dry camping.

Budget-wise, the Keystone Montana 3791RD is listed at $72,000 compared to $91,000 for the Keystone Alpine 3700FL.

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.

At the end of the day, the best RV is the one that fits your travel dreams and budget. Either of these is a worthy choice.