Rel is likely perfectly fine in some respects, but their cost vs performance is just a bit ridiculous. They do have a head start in marketing of subs and do play nicely with the audio mags with advertising and samples and such. So while the Rel may be adequate for one's needs, that depends on what they are both in terms of extension and volume..... A better comparo to the Rel 8" would be another 8", say Rythmik's F8 which is still a better sub IMO. The Rel T7 spec is an f6 of 30hz! That's not even a sub....