I worked at a bike store so i know a little bit about this stuff..

do you plan on taking your bike to a track, you will need either a 1 piece suit or a 2 piece where you can zipper each together..

Alpinestars is a very good company, and make awesome stuff, but its usually not cheap.

Joe rocket is very good too, and so it tecnik(sp?)

With the jackets you want them to be pretty tight(so the padding dosent shift too much in case you fall