what makes you wish you had used glass?
I used clear class, but I worry about its durability. Quite frequently at parties, I'm making sure my guests are using coasters on the cocktail cab, and I do have some special cleaner for it as well, however it is a plastic, and all plastics will scratch (more than glass).
Just like my "scratch-proof" lenses in my glasses....

Other than that, no complaints. Of couse going the plexi route is much cheaper. Just buy a sheet at your local home depot, and you can cut it yourself. I used a jigsaw for the corners and a dremel for the finishing touches.