switch back and forth between 29 and 27.5+ wheels? if so how often?

mtnbikerva1

I am in the market for a new bike and I live in Virginia and ride all terrain. Rocks, roots, true single track, climb, descend, dry, wet, sand...
I am 6'1" 171
I am researching my butt off about frames, groupos, wheels...
I seem to have narrowed it down to the Santa Cruz Hightower and even more so the IBIS Ripley LS in Large or XL vs the TREK Fuel EX 29 or 27.5+.
How many of you ride a 29 wheeled frame and switch to 27.5+ part time or fuel time?
Have you found the 29 is just better?
27.5+ bike and switched to 29 wheels?
Thank you and good riding to you!

rockmonkeysc

27.5+ really hasn't taken off over here (this is a UK Forum) mostly because fat tyres suck in mud and we get lots of mud.