2025 Grand Design Solitude 345GK vs 2024 Keystone Montana 3231CK

Detailed Comparison

If you're weighing the 2025 Grand Design Solitude 345GK against the 2024 Keystone Montana 3231CK, you're looking at two solid contenders. Here's how they stack up.

In terms of footprint, the Grand Design Solitude 345GK stretches 37.0 ft while the Keystone Montana 3231CK spans 36.0 ft. Weight-wise, the Keystone Montana 3231CK is the lighter rig at 8,100 lbs versus 10,000 lbs.

The Grand Design Solitude 345GK sleeps 4 while the Keystone Montana 3231CK accommodates 9. Slide-outs play a role in livability: the Grand Design Solitude 345GK has 1 and the Keystone Montana 3231CK has 2.

For boondocking enthusiasts, tank sizes matter. Fresh water capacity goes to the Keystone Montana 3231CK at 76 gallons versus 56 gallons. Solar-wise, you get 200W on the Grand Design Solitude 345GK and 500W on the Keystone Montana 3231CK. Battery banks are 150 Ah and 250 Ah.

At $162,000 MSRP for the Grand Design Solitude 345GK and $165,000 for the Keystone Montana 3231CK, the Grand Design Solitude 345GK saves you $3,000. With only a 2% price difference, the choice comes down to features rather than cost.

If you're traveling with a family, look for the model with more sleeping positions and better storage. Boondockers: look at the fresh water capacity and solar/battery systems — they determine how long you can stay out. For the full-time RV lifestyle, every gallon of tank capacity and every inch of counter space counts.

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.