Tried the SX-15 and didn't like it at all, reviewed it on this board. Besides from that I found the 15 to be a PITA for the type work I do, absolutely can't get in and around commodes etc. Like dealtimeman says the turbo hybrid is the tool and Olsen will take good care of you. I traded the SX-15 for PC stair tool and 400 in shopping credit just to get rid of it. Normally I would have tried the turbo's 15 inch head but unless u have wide open large spaces it is not necessary.