I'm surprised so many vets here have forgotten about possibly the premier chip review site:
http://www.pokerchipreviews.com/
(although I see the homepokertourney.com reviews continue to grow and grow)
Mischman, spend some time there. I think it will be well worth your effort and will save you some money, investing in chips that you won't be happy with long-term.
... BTW, I can guarantee that those Ebay chips that you linked are not "clay" chips. You can't find new chips that are real clay (not that real clay is
actually "clay" but I digress) for less than $0.50 per chip... and they usually close in on $1 per chip pretty quickly.