I am currently riding a Niner EMD XS - and love it...but I am 5'1" and after demoing a 26" Pivot a few weeks ago I realized that for my size a 26" is for me. The climbing on my hardtail is awesome and the 29" wheels just roll over everything but it is not as nibble going around the corners.

I really like geometry on the 26", it is easier for me to handle, and it is so nibble on the corners...so now I am on the market for a full suspension bike. I love my 29" but I am in Colorado so I feel I would benefit more from the 26" wheel.

Try some out - they are all different.