I've searched and read the stickies, but still have a basic PA question: I need to buy/rent a PA system for a rock band. I'm just starting to learn about these systems. What I'm leaning toward is a smallish system (around 4600 portable system) for vocals and maybe keys and then use the amps for guitar sound. I'd prefer, though, to get the guitar in the system, too. We will be playing small to medium venues, like small bars, coffeehouses, large parties. The music is 60's rock, nothing that requires huge sound. I've come to this conclusion because it seems like getting the bass in the main system requires a lot more $$. What do you think?