Oh boy ... you're going to get some good responses!
I think that most people here would say that CPC is one of the best (and most likely the ONLY) places to get quality, custom-made, shaped inlay chips. Many, many members have made custom sets with them. I myself, with already over 4000 chips, plan to order a set from them some time this year.
Those who have probably can't say anything bad about them (except possibly complain about price or lead times on custom orders).