I've been camping since I was a kid with my parents. We started in a 25' Class C "mini" motorhome and moved up through the ranks to bumper pulls and 5th wheels.
My kids are older now and camping is no longer in the cards. Looking back on all the great memories we made camping with my kids from toddlers to teens, and if price and quality were not an issue, I would pick the Surveyor Legend based strictly on floorplan:
1. Bunks for the kids. I'm not sure what the upper bunk is rated for but those bunks are a good size and will accommodate your girls for years to come. We did bunks for the kids all the way through their teens.
2. Bunks are in the back corner leaving you guys some room to relax after you put the kids down.
3. I would not be worried about my kids rolling out of bed or on top of each other.
4. I am sleeping close to the kids in case they need to get up.
5. The shower is bigger. Easier to bathe the kids.
6. The freshwater and black water tanks are a tad smaller but the gray water tank is a bit bigger for shower and sink drains.
7. The pantry looks a little bigger, which you will appreciate the extra storage when packing for youngin's.
Everybody's lifestyle is different so needs, wants, and concerns all vary.
There are plenty of other factors to consider (storage, appearance, cost, etc.) that are going to hinge on your preference.
Don't know if you were looking for any inputs but thought I'd throw some out there from a guy who "glamped" (camped in a trailer) with his kids for 15+ years.