most chips that are without brand are garbage. chips that aren't garbage: chipco, NJ composites, NJ clays, paulson clays, matsui clay or plastics, bud jones, and other blue chip clays (questionably).
check out
homepokertourney's reviews that's the best set of info about chip quality you'll find.
good luck. what i recommend; figure out if you want clay or ceramic, and then get some samples. i spent nearly $100 on samples in the last few months, and that really simplified my choices.