h pipe or x pipe, and which ones

[apowers2k]

whats up everyone, i have 02 gt with 2 chamber flows, i want to make it louder so i was considering a off road h pipe or x pipe, can anybody give me suggestions on which one is better, the h or x pipe, and which one will sound better with the 2 chamber flows, also any recommendations on what brand to purchase will be very helpful too, thanks alot, take care everyone