Mikey,
I own a Standard Classic L1 and two Compact L1s and have used the compacts on all kinds of gigs with no sound or volume issues. Sometimes I use one of the compacts and sometimes I use two of them. It seems like it really doesn't make much difference from the audience point of view.

I have used mine with both a Tyros 3, a Tyros 4, a Korg PA2XPro and they sound great with all of the keyboards.

I have absolutely no regret about buying them.

Hammer