I like them fine. I haven't compared them to any other subs though, they are the only subs I've owned. But IMHO, they blended in nicely with the 9.0's and bring out the lower octaves of music and move plenty of air with movies. I'm using a pair of them as stands for the LF/RF 9.0's.

The New Larger Sub is a monster of a sub, I'm sure you will be pleased with it if you decide to purchase. VMPS's ribbon speakers are a good buy for the money for those looking for ribbon speakers, they may be the next speakers I buy but I will never sell the 9.0's or 4.0's.