looking to get a good cat back exhaust

just bought a new 2013 Tacoma Trd sport and looking to get a new cat back exhaust... any suggestions? want something that has that nice sound but also increases my horsepower and torque

 

I see this is your 1st post here so I would like to start by saying Welcome!..and congratulations on your new purchase. Very exciting, I know the feeling just recently purchasing one myself.
2nd I would recommend searching our forums here on TW considering the posters usually put a lot of time and energy into their original post, rather than just asking a question that has been asked multiple different times 10 different ways.
here are just a couple I found typing in exhaust in the search forum: http://www.tacomaworld.com/forum/2nd-gen-tacomas/273831-what-kind-exhaust.html
http://www.tacomaworld.com/forum/4-cylinder/271026-best-exhaust-air-intake-need-help-2013-2-7-a.html
AND if you don't find your answer after some modest searching, post your question!