My mate is in the market for a new sub, but is looking for a downward firing beast, that also looks good. He has a very big room so small/mini sub would not do. The smaller Rels would not work (or would it). Budget is about £1000. He heard the KEF 2500 sub and thought it was pants. The higher grade KEFS still don't get a great write up and the amps go pop very easily. Any ideas ?