Unfortunately, I can't speak to any of the amps, as I haven't heard any of them (including the BHSE). I ordered my BHSE on faith based on feedback I've heard from people whose advice here is generally sound, and I've never heard a bad Kevin Gilmore design. I like the sound from amps he's designed.
There are a lot of posts over the last several years on this forum where you can read about the BH/BHSE, WES, and A-10.
Here are a few threads to get you started. Get a nice drink and start reading
Edited by Elysian - 11/21/11 at 8:14pm