Yep. Had a 10kd and got good power but it broke when we got 12.8k (output FETs) we were getting close to the 13.7k claimed on a 16v system.
I have a 4k2d right now with a broken output FET (or a couple maybe). Didn't get to test it yet. I will once I get it back from repair.
I had a 7kd through here and it worked but I never power tested it -- was a bit leery of testing it too hard.
I may just have bad luck.
The 2k5d worked great, though. Got really similar numbers to the SAZ-2000D -- of course the 2k5d was at 2 ohm and the 2000D at 1 ohm per their ratings.