saw blade

Currently all that I have for my 10" Jet is a crosscut blade. My question is should I buy a combination crosscut/rip blade or go with a rip blade? What brands would you recommend? I did a search and found someone remommending the unmarked Irwin blades on eBay. How many teeth? How many different blades? I'm just full of uncertainty.:o Thanks in advance.

I was not lucky enough to have a 220V outlet in our garage, so I am trying to trade my decent compressor for a 120 v compressor that will be almost as functional. The old had a rating of 9.9 at 90 psi. It worked great with my impact driver and would cycle infrequently while using it (33 gal tank). I am being offered a trade, a 120 v system, 33 gallon tank, but only rated at 4.2 @90. My question is, is that rating that of the compressor or the rated output of the system (meaning will the output of the tank be whatever I need, but if it cycles, the compressor may not be able to keep up, so I would have to stop to let the tank fill). I hope the question makes sense. Thanks