What are your preferences in terms of chip composition? Price? Denominations vs. non-denomination? Hotstamp vs. inlays?
What is your typical cash game buy-in and blinds/antes?
Answers to these questions will undoubtedly garner you more meaningful responses.
That being said, the most meaningful thing that I can say to you is to answer the questions yourself, thereby narrowing things down a bit.
Then, go out and buy samples, lots and lots of samples..............................
-jamby