I'll make this really simple: I own a 700RBII and its great. I got it really cheaply but its in great condition. I've been alerted to an opportunity to trade - possibly straight up - for an MB500. Weight and size isn't an issue to me at all. Does the MB500 give me any advantages? I have a feeling the answer is "no" but wanted to ask anyway. For reference I play in a band doing country/rock/R&B/etc, and I'm a "set it and forget it" amp user. I don't use effects either.