I have one that I used to use all the time (my horse now uses a thinline). It's a great half pad for the price. The padding is even and mine hasn't compressed. Although my old trainer had the same pad for many years and it was just starting to get a little flat, but i'm talking 5-6 years of being used multiple times every day. Well worth the money, IMO.
Oh, I just got that halfpad for christmas and I love it! It is so comfy, both of my horses love it, and it doesnt interfer with anything, it doesnt bulge or slid around either I really like it I am investing in a second one.