Downpipes for N55 (X6)

Hey guys, so ive been looking around for downpipes for my X6 (N55). Preferably i was looking for some catted downpipes, but the only ones tht been popping up is the VRSF and Supersprint Cattless downpipe. Do any of you know any other company tht has catted downpipes for my N55 or have any of you guys ran the catless ones tht i just mentioned. My problem with catless is the SMELL in the cabin tht i have been hearing and the engine light, which is not too big of problem, main concern is the smell



Thanks in advance!