Hi Rob! I have owned the Studio 20's V5's and they actually play pretty dang loud. I think sometimes people don't realize how loud bookshelf speakers play because they lack the bass that towers have. Get a pair of subs and pair them to the Studio 20.s and you'll understand.
I think the Studio 20's are a bit bright sounding and can get harsh, especially at higher volumes. I think the Boxers sound a little more laid back and less in your face but they will still play loud; louder than the Studio 20's? Probably not much if any. They do sound a tad more refined and image really well. I heard them paired with a pair of rel t5's and they sounded really, really good.
What speakers are you looking at? Whats your amp? For some reason I thought you did a Decco 65se with some Vandys already...
I think the Studio 20's are a bit bright sounding and can get harsh, especially at higher volumes. I think the Boxers sound a little more laid back and less in your face but they will still play loud; louder than the Studio 20's? Probably not much if any. They do sound a tad more refined and image really well. I heard them paired with a pair of rel t5's and they sounded really, really good.
What speakers are you looking at? Whats your amp? For some reason I thought you did a Decco 65se with some Vandys already...