We can't help you pick. Every brand has lemon stories and every brand has wonder stories. For me, it all comes down to floorplan and "livability" even if you're "just camping". So, here's what I see for pros + cons:
Keystone RV Hideout 29DFS:Pros:
- the bathroom is accessible without extending slides; if you're in the potty training business, this is helpful
- I like that the couch faces the TV, watching TV looking to the left gets old
- has a pantry even if it's "hidden"
- from an emergency exit perspective, I like that it has 2 doors
Cons:
- the bunks will need sleeping bags because making beds in that hole has to stuck (when talking to my then 8 year old daughter, she didn't want to sleep in a sleeping bag and we knew she wouldn't be making the bed)
- what do the bunks have for emergency exits?
Coachman Catalina Legacy 293QBCKPros:
- bunks are more bed-like, letting you have more traditional bedding
- kids have their own TV for evening entertainment
- kids have a hard-door, so you can be in the living room making noise at night w/o being held hostage to them
- bathroom sink has some counterspace for toothbrushes and whatnot
Cons:
- TV is watched by looking right in the living room
- slide must be extended to get to bathroom
- I'm not seeing a real food pantry