The 2555X is definitely a great amp. I had one for a while, including the mini-version. I just didn't like the controls and how you configured the tone, always seemed a little tricky and non-intuitive with the master/input gain. Once you get used to a certain magic setting you keep it there. I used something close to Gary Holt's settings that use a tube screamer. Also didn't like with the mirrored surface how I couldn't read the labels
I did like the extra gain available on the Jube, but I just prefer the tone of the original 800 boosted so I have stuck with that.