I have the superhub and its pretty good although mine doesnt like 2 xboxes connected at once.
But at any 1 time our hub can have 3 laptops, 1ipad, 2 android mobile phones an IPOD touch and wireless printer, xbox and or ps3 with no problems.
The online performance with all devices connected is sweet aswell but thats down to our line and not just the hub.
EDIT
Our bluray player is also connected but thats the only wired device.
AND!!!!! Some people say the superhub doesnt like atheros wireless adaptors but if you got the latest firmwear its fine and will hit max speed if your line is ok an not over subscribed or suffering high utlisation.
Ok this is what I get right now but only 2 devices connected both wireless both laptops.