never used them myself, yet (getting 2 here soon though), but hear there pretty good quality amps. spoke with tech guy at ed and he said their slightly underrated and rated at 12.5v and not 14v like others so that's a plus.
only bad thing bout them is you can't order them for another 4 weeks cause there on backorder from selling out.
dont buy from their ebay store, they take forever to ship. I ordered mine like 2 weeks ago and they still havent shipped even though they said they had 5 still in stock when i ordered! argh...