Are they worth the extra few quid for what I need?I have the 4's and they're excellent for what i need.
Thanks will order the 3 later.If you've already got the 560-TX, go with the III's. I can't help but think that the additional functionality the IV provides would be seldom, if ever, used.
I've got three 560III's and a 560-TX - it's a monster combination.