2025 Grand Design Solitude 390RK vs 2024 Heartland Milestone 380BH

Detailed Comparison

RV buyers frequently compare the 2025 Grand Design Solitude 390RK and 2024 Heartland Milestone 380BH. Understanding their differences can save you from buyer's remorse.

In terms of footprint, the Grand Design Solitude 390RK stretches 30.5 ft while the Heartland Milestone 380BH spans 34.5 ft. Weight-wise, the Heartland Milestone 380BH is the lighter rig at 10,000 lbs versus 15,400 lbs.

Capacity-wise, expect to sleep 10 in the Grand Design Solitude 390RK versus 9 in the Heartland Milestone 380BH. With 4 and 1 slide-outs respectively, the parked floor plans differ significantly.

Tank capacities are a key off-grid consideration. The Grand Design Solitude 390RK carries 70 gal of fresh water, 68 gal gray, and 41 gal black. The Heartland Milestone 380BH offers 71 gal fresh, 48 gal gray, and 42 gal black. The Heartland Milestone 380BH has the edge for extended dry camping.

Budget-wise, the Heartland Milestone 380BH is listed at $62,000 compared to $62,000 for the Grand Design Solitude 390RK.

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.