What is your truck?
Personally I would want to go bigger than either of those, but the top picture looks like better flow in the kitchen and bathroom area. In the top floor plan, the kitchen and bath look less crowded/easier to use. I personally do not like the "east/west facing" beds.
For me anything less than 28-30' is too short or has some compromise- flow, storage, walk-around room, view, etc.
Also, I like the comfort/security of having 2 axles/4 tires on the ground.
The new 26U floor plan looks OK.
When you actually go into a trailer in person, imagine living there. Sit in the dinette. Imagine yourself cooking, washing dishes, showering, etc. Sit on the toilet. Get a feel for the space. Think about the activities you will be doing. Will you have enough storage for clothes, food, dishes, towels, hobby related stuff, etc.
2013 Classic 30 Limited
2007 Silver Toyota Tundra Crew Max Limited 5.7 iForce
2006 Vivid Black Harley-Davidson Road King Classic
1999 Black Nissan Pathfinder LE
WBCCI #1811, Region 6, Unit 56