I like these chips. I have 1,200 of the kind in the first row and I got all mine free too (I'm thinking the same place probably).
They have a really nice weight (9g), sound (no metal insert) and feel (kinda chalky, not "plasticky" at all). I was thinking of getting the blanks and labeling them as well before I got into the HH buy, so I was checking them out. HPT says they have a recessed center of about .05mm so they would be good for labeling. The link to their review is here (I don't think we have a review on them yet, I was thinking of doing one).
http://www.homepokertourney.com/revi...tm#Real%20Clay
You'll have to scroll down, they're about in the middle of the page.