Hi, I had originally the Dali E12-F which was nice however it was simply not taut or articulate enough for my musical tastes. Then I tried the MS Mezzo 9 - which was nothing short of spot on, but I had a technical fault with it. I then tried the BK XLS200 which was a cracking sub, I was impressed with it so I decided to try the BK XXLS400 which was also a great sub, but I had a problem and decided to return it. So I am looking for something different to try now. I have my eye on these subs, would really appreciate some opinions from the experts on avforums, I am leaning towards the SVS however I must consider alternatives as well. SVS SB1000 SVS SB12 NSD B&W ASW610 Dali Ikon Sub Mk2 I cannot get out to demo anything so I need to try and get a consensus on here and take a gamble. Much appreciated. I must clarify I like a sub which is fast enough to keep up with my speakers with music and also tuneful as well.