just a fyi about the ed subs, they were built by image dynamics. they are somewhat clones of the ID series, but slightly different. i can vouche for them right now that they are solidly built, and if anything is to blame, its eaither the amplifier, or the enclosure.
eD and Image Dynamics share very little, if any, ties. Image Dynamics does not produce eD subwoofers. The only thing they may share is a common distributor or perhaps Ben went to ID for help with the speaker design.
As far as eD products go, I really have been impressed with everything. The 9.1 and 9.2 amplifiers are both very solid products. I have used them in multiple installations and they have never ceased to disappoint. While my experience with eD subwoofers is somewhat limited, I do think they offer good budget speakers at good budget prices. The speakers are amazing; I will vouch for them being a great buy. Also, I have nothing but positive things to say about eD deadening. In every application I've used it in it has been non-smelly, adhered really well, easy to use, and well priced. I realize there were problems with some of their older deadening, but they have been taken care of.
I know Ben Milne has caused a lot of controversey on this forum, so let me say this. Yes, he is a little blunt. Yes, he likes to follow protocol and stick to it. But I have never, ever seen a person so dedicated to his company, his users, and to his products. His constant assistance as ICIX (while. IMO, is a perfectly awesome forum) as well as his involvement with the community are testaments to this.
Overall, I have been very satisfied with eD and have very few complaints.
Just my 2 cents!