Any recommendations for a full suspension 29er that can ride basic xc, road commuting( if I put slicks on, and lockout forks), and still take a beating?
Why are you asking for a FS? For what you just suggested an FS bike would be kind of a waste of money and definitely overkill... get yourself a sub $1000 hardtail with a decent fork and it will be more than enough bike for xc trails and biking on the road my friend. If you're that worried about durability get a steel frame and you'll never run in to any issues so long as you live.
That depends on you! I have a 29er and I love it, gives me tons of confidence on the trail and I don't feel limited by the large wheel like other people have mentioned in the past. I'm also 6ft tall and 220 lbs so a bigger wheel might make more sense for me than for you depending on how big you are!
If you can take both for a spin and see how they feel you'll probably know the answer to that question super quick
^^ Agree, At 6'4 240+ I just got a 29r and I think your choice in wheel size should depend more on your body than bike type or intended goal. (unless you are a DH world champ, or jump dirt demon.)
Either way it's hard to get a good read on a parking lot test, try to find a demo day if at all possible.