I've been highly considering the GT30/40R, but I'd like to know what other comparable options are out there?

This is for the UrS4... specs in my sig.

Oh, and I have 1 set of chips for it, good to over 400wheel on pump gas, uses the SQ exhaust mani, and the Porsche orange top inj. Also requires rs2 exhaust cam (stock s4 intake). Call Tim @ NEA for a reference. We imported a German tuner for a week to chip tune 2 cars, the chips and steps to make it work were the results. This was a very good chip and the dyno plot was beautiful with great torque that didnt drop off much.
Send me a note off list if interested in chipset/MAF/injectors.
Rod