2025 Grand Design Solitude 345GK vs 2025 Grand Design Reflection 337RLS

Detailed Comparison

Looking at the 2025 Grand Design Solitude 345GK alongside the 2025 Grand Design Reflection 337RLS? Smart move — comparing specs before you buy is the best way to ensure satisfaction.

Starting with size, the Grand Design Solitude 345GK measures 37.0 ft long and tips the scales at 10,000 lbs dry weight. The Grand Design Reflection 337RLS comes in at 42.0 ft with a dry weight of 11,100 lbs. That gives the Grand Design Reflection 337RLS roughly 5.0 extra feet of length.

For sleeping arrangements, the Grand Design Solitude 345GK offers room for 4 and the Grand Design Reflection 337RLS can handle 7. The Grand Design Reflection 337RLS benefits from 3 slide-out(s), expanding the interior when parked.

Looking at self-sufficiency, the Grand Design Solitude 345GK packs 56 gal of fresh water and 200W of solar. The Grand Design Reflection 337RLS counters with 56 gal fresh water and 150W solar.

Price is often the deciding factor. The Grand Design Reflection 337RLS starts at $141,000 MSRP, while the Grand Design Solitude 345GK commands $162,000 — a $21,000 gap.

Families with kids will appreciate the extra sleeping capacity and living space. Off-grid campers should pay close attention to solar wattage, battery capacity, and tank sizes. Full-timers should prioritize tank capacity, storage, and overall living comfort.

The numbers tell one story, but the feel of a floor plan is personal. Schedule a walkthrough before you decide.