2025 Forest River Sandpiper 3220RL vs 2025 Grand Design Momentum G-Class 28G

Detailed Comparison

Before committing to the 2025 Forest River Sandpiper 3220RL or the 2025 Grand Design Momentum G-Class 28G, it pays to understand exactly where each one shines and where it falls short.

The Forest River Sandpiper 3220RL measures 34.0 ft in length at 11,000 lbs, compared to the Grand Design Momentum G-Class 28G's 43.0 ft and 12,000 lbs. GVWR ratings sit at 16,000 lbs and 15,200 lbs respectively.

The Forest River Sandpiper 3220RL sleeps 4 while the Grand Design Momentum G-Class 28G accommodates 10. Slide-outs play a role in livability: the Forest River Sandpiper 3220RL has 3 and the Grand Design Momentum G-Class 28G has 0.

For boondocking enthusiasts, tank sizes matter. Fresh water capacity goes to the Forest River Sandpiper 3220RL at 58 gallons versus 56 gallons. Solar-wise, you get 600W on the Forest River Sandpiper 3220RL and 150W on the Grand Design Momentum G-Class 28G. Battery banks are 150 Ah and 150 Ah.

At $70,000 MSRP for the Forest River Sandpiper 3220RL and $70,000 for the Grand Design Momentum G-Class 28G, the Grand Design Momentum G-Class 28G saves you $0. With only a 0% 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.

Take these specs as a starting point, then go see them in person — there's no substitute for stepping inside.