I am a VHT fanboy, so sorry, I am biased
UL ALL THE FUCKING WAY!!!! Sorry, but I love the Engl SE for what it does, I just personally much prefer the more open, and dry sound of the UL. The UL, when setup right, is the most brutal freakin amp on the planet I have ever heard, next to the natas, which is very similiar. I could talk for days about my UL, I just love it to death, my all time favorite amp. I have 3 amps, the UL, the herbert, and a 6505, and I love them all for what they do, but the UL is my alltime favorite, bar none. I run it with the master around 2 or 3 oclock, channel volume to taste, and it just phenominal. It is absolutely THE BEST live amp I have ever owned as well, NOTHING cuts like a VHT. If you are used to the VHT tone live, you will be disappointed in that aspect with the SE. I like the Engl tone for some things, but I just don't jive especially well with any of them, except maybe the blackmore. The girth, and massive tone, and just in your face sound of the UL is unmatched, UL FOR THE WIN!!!!!!!