In the interests of moving into an apartment and trying to decrease my load of junk to move up and down stairs for gigs I'm thinking of selling off my 700RB-II head and maybe one or both of my cabs to get a 210 combo and then use it with a 410 extension cab. With the GK's I'd have to sell everything and get the 210 then a GK or some other 8 ohm 410, but if I get the Super Redhead I can keep and use my 4 ohm 410. What do these combos really sound like? I had a 400RB-IV-210 for about a month before returning it and it couldn't handle the B at any volume let alone high volume so that's a requirement here. The combo MUST be able to handle the B at any volume with or without the extension cab. I'm looking for opinions on both. I've seen a guy a few times who used a S.R. with a Goliath II and it sounded great and I love the sound of my GK so I'm looking to those with more experience to let me know their opinions. Thanks!