I have not tried those particular models, but I just switched over to a 27.5. I am 5'3".

I have a 29er, and I have a 26er. The new 27.5 bike is perfection. I LOVE, LOVE, LOVE it. The more I ride it the better it gets. I have the Giant Lust 1 Advanced. I cannot say enough good things. I was not able to test ride either, I took a leap of faith based on my bike trusty bike shop guy. If we lived closer I would let you take mine out.

LOVE IT.