j's racing is the best by far but be carefull how you get it from as a bunch of us did a group buy on here and we got screwed over so be carefull who you order it from. there hard to get hold of one unless you dont mind paying loads for one.
its a good exhaust, hard to label it the best though, as others will perform better depending on your modifications and looks are based on the individual, some like the down turned tip others dont.
titanium break easy compared to stainless steel that is better and heavy...
a lot of j's exhausts had problems with their silencers they break inside and rattle !
one of the best sounding exhaust ive ever herd,bought a stainless one new from sumopower last year,cost basically 1k and it was nuts!!! for the sound it makes its worth every penny more than the rm01a that was mentioned earlier no competition