sure, the big brands make decent products, and even some quality products (Solo X, t4000.1 etc...), however, these items are very high and as stated you can get comparable or better for cheaper...for subs, ive had Memphis M3 (loved it) CVRs (loud but sounded like ****) and Lanzar ST (crap) from the "big companies"...the stuff I have had from smaller companies, Treo, Kove among others, have been better than all of the big brands. I wont go into amps, because I have had too many. While the Hifonics amp I currently have is the strongest, it is not the best amp I have ever had. That distinction goes to an old school fosgate...