I wouldnt say any other exhaust. It all depends on what type of riding. If youre dragging, look at cpi, shearer, LED, etc. All depends on riding style. Trail riding with t5 isnt great, thats why the tr6 came out. The t5 are in the power or they arent it seems. I have a set on my play bike. They are snappy and they are very loud compared to others most dont like that in the trails.
There is a lot of options. I have owned both the t5's and the fmfs and i like the t5's more, mostly because of the power stand point, but its depends on your riding.