Just got done installing the Infinity-Z in my kids bathroom. Here is a quick summary of the experience...
Had it delivered to my local HD store to save on the shipping. Box looked good and was strapped down to a pallet so that must have helped a lot to keep it in such good condition. All the parts were in order and very well organized, by number, in separate bags. The install went pretty smoothly, with the only hitch being that I didn't cut the top and bottom guide rails to a short enough length on the first pass so had to go back a few steps, recut, then re-do. There is a difference between the printed instructions that came with the doors and the online instructions linked off of the product page. The online one suggests taking an extra 1/4" off the final length. This was necessary to fit. Good to know! After that, all went very smoothly. The hardware / parts were of good quality and I'm very happy so far with the final result. Looks and feels pretty high-end overall. Definitely recommend these doors over some that are a bit cheaper and will look it.
One other little note, is that I recommend putting some masking tape around the guide rails to the side of your cut line, prior to cutting. I didn't, on my first cut, and my hacksaw slipped a little to the side and scratched the surface. Tape on my next cut alleviated that. Also, be sure not to over-tighten any of the hardware screws that attach to the glass. Could put some stress on the glass and cause a break later.