29er... or no 29er... that is the question

To many bikes to choose from.......

Should I make the jump to a 29er? The GF Rumblefish looks nice... or should I pick up a Trance, Fuel, Stumpy type full sus. 

All I keep hearing is how 29ers are the best. 

I will do the majority of my mountain biking at walking purchase and I have no interest and crazy downhill stuff or hitting 4foot+ jumps.  I just like to zip around the trails.

My current bike is a Hard Tail with 90mm front shock so I am looking to up the suspension a bit.

So all you 29er riders, is this a nobrainer?