I bought an RB 210 just to test ... I admit I'm lost. The watts add up and I would really have 200 watts?
the RB210 is 250W on its internal speakers and 500W with an external 8 ohm cab added.
You didn't mention what genre of music you are playing.
I find that the 210 is quite good for small-to-medium room gigs, but there's not much headroom for dynamics -
I am thinking that a Ampeg V12 head and the new Ampeg 2 x 12 venture cab would be light, powerful and versatile enough to do any gig or rehearsal.