Originally Posted by
wolfchild
Don't buy the Giant ATX 27.5 2.. That bike has 27.5 size wheels which are not very common. It's very hard to find wheels, tires and tubes in a 27.5 inch size. I've never seen any bike shop even stock tires in that size.
Try to find yourself a bike with either 26 inch wheels or 700cc wheels
Maybe 5 years ago, try finding a new bike with 26" wheels is getting hard now, 27.5 is the current standard like it or not for MTB's.
For the OP, both of the bikes linked to are MTB's great for their designed purpose, but a hybrid would be a faster and probably better choice of bike type for use as a commuter.