Which Air Compressor should I buy?

I've used a Craftsman 5.5hp 30 gal almost 15 years and it has served me very well. I don't know the difference in quality between the old vs. the new, but I do notice that the newer compressors in this size and price range seem a bit wimpy in comparison. These turn up on craigslist and other places every now and then and may be sufficient for your needs.
http://www.sears.com/craftsman-33-g...p-00916473000P?prdNo=3&blockNo=3&blockType=G3