Tomei Pistons are going to cost you in excess ove $1000. You can pick up a good set of CP pistons for under $800. Wisecos sell for roughly $550-600. All are good but as anything...most focus on budget which is perfectly fine. Just be sure you are confident in what you are getting. I did a writeup/post not too long ago regarding differences between CP and Wiseco. If you run a search in the general section you will be able to find it.
If you cant find good prices on pistons or engine internals..shoot me an email. I can source you a few things if you need them.