IIRC when I went shopping last year, it was £20 for a 2-way DI or £50 for the Behringer 8-way job, so I got the 8-way for our band (potentially 4 guitars, keys and violin feeding it). But that's a rack-mount job so really needs a flight case, where the little 2-way DIs are small and tough and can just be chucked in a gig-bag.

Re balancing levels Herge, if you can find a soundman to do the job then you'll sound better out front.

Graham.