2024 Grand Design Imagine XLS 21BHE vs 2024 Keystone Montana 3121RL

Two popular options on many shoppers' shortlists — the 2024 Grand Design Imagine XLS 21BHE and the 2024 Keystone Montana 3121RL. Let's see how they compare across the specs that matter most.

Specifications Comparison

Specification2024 Grand Design Imagine XLS 21BHE2024 Keystone Montana 3121RLAdvantage
CategoryTravel TrailerFifth Wheel
Year20242024Tie
Length15 ft28 ft
Width8.5 ft8 ft
Height9.5 ft13 ft
Dry Weight3,100 lbs12,000 lbs
GVWR7,800 lbs16,100 lbs
Sleeping Capacity1052024 Grand Design Imagine XLS 21BHE
Fresh Water28 gal93 gal2024 Keystone Montana 3121RL
Gray Water39 gal48 gal2024 Keystone Montana 3121RL
Black Water31 gal39 gal2024 Keystone Montana 3121RL
Fuel Capacity
Horsepower
Engine
Slide-Outs11Tie
Solar200 W200 WTie
Battery200 Ah200 AhTie
Inverter500 W2,000 W2024 Keystone Montana 3121RL
MSRP$65,000$66,0002024 Grand Design Imagine XLS 21BHE

Detailed Comparison

Two popular options on many shoppers' shortlists — the 2024 Grand Design Imagine XLS 21BHE and the 2024 Keystone Montana 3121RL. Let's see how they compare across the specs that matter most.

Dimensionally, you're looking at 15.0 ft for the Grand Design Imagine XLS 21BHE and 28.0 ft for the Keystone Montana 3121RL. The Keystone Montana 3121RL carries an extra 8,900 lbs, which affects tow vehicle requirements and fuel economy.

The Grand Design Imagine XLS 21BHE sleeps 10 while the Keystone Montana 3121RL accommodates 5. Slide-outs play a role in livability: the Grand Design Imagine XLS 21BHE has 1 and the Keystone Montana 3121RL has 1.

For boondocking enthusiasts, tank sizes matter. Fresh water capacity goes to the Keystone Montana 3121RL at 93 gallons versus 28 gallons. Solar-wise, you get 200W on the Grand Design Imagine XLS 21BHE and 200W on the Keystone Montana 3121RL. Battery banks are 200 Ah and 200 Ah.

At $65,000 MSRP for the Grand Design Imagine XLS 21BHE and $66,000 for the Keystone Montana 3121RL, the Grand Design Imagine XLS 21BHE saves you $1,000. 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. If you're a weekend camper, don't over-buy — the smaller, lighter model may serve you perfectly.

Whichever you choose, you'll be getting a capable rig. Just make sure to inspect one in person before signing.

Individual Overviews

2024 Grand Design Imagine XLS 21BHE

  • Category: Travel Trailer
  • Length: 15 ft
  • Weight: 3,100 lbs
  • Sleeps: 10
  • MSRP: $65,000
View Full Specs

2024 Keystone Montana 3121RL

  • Category: Fifth Wheel
  • Length: 28 ft
  • Weight: 12,000 lbs
  • Sleeps: 5
  • MSRP: $66,000
View Full Specs