How many of you play what you'd consider a "physical" style of bass? Do you whack on the strings really hard in the heat of a gig, or do you try to control it and keep things gentle? For those of you who like basses you can get physical with, what are the essential properties of the bass? For example, I like a bass that's heavy enough to stay put when it gets whacked around, or at least come back to rest in the right position. A Steinberger doesn't work for me for that reason, 'cause it's too light.