Stuck!?!

I'm not sure which way to go ... I Have an LS with AEM CAI and DC 4-1 headers already ... I was all set on a JRSC but now I am debateing turbo... that whole robbing power from the engine... I was at the JRSC site... and with almost the same setup as me they got 160 at the wheels.... I just don't want to by the SC and be pissed off that I didnt go turbo... I went to the shop today and they said they can build a custom one for 3.5-4g's (tubroz324 something ever heard of it?) or greddy has the on for 3195 without the intercooler... Than I was even thinking LS/vtech but I have heard a lot of bad things about going that route... any suggestions..?? i have read tons of articles on the whole SC vs turbo thing .. but I still haven't chosen...
Thanks..