I just wanted to bring this up because for some reason this point has been driven home quite often lately. If you pick hard - like your playing an acoustic guitar 'hard' - and you use a gauge of strings bigger than a .009 - .042 - then you are not going to get an Express circuit. You will not find the experience enjoyable and you will not 'get' the Express. You need a disciplined pick attack and some finesse. The Express is a sensitive amp, not a BF Fender or a Marshall Plexi.
There, I said it.
Most people stall out when fixing a mistake that they've made. Why?
Yep.. Express tells you how it wants to be played..It does teach you about dynamics, more accurate picking etc.. You can't resist an Express, only join and comply!!!
I think strings do have a sweet spot on how hard you can strike them. 10-46 and 10-52 sound fatter and it's likely that you'll play them harder. I'm sure you can strum them softer too.