I currently have a pair of 1SCs and I love them. I am thinking about getting a pair of 2's or 2s's. I am wondering if anyone have experience comparing the 1sc and 2/2s? Is it a big improvement? How about the difference between the Response 2 and the Response 2s? My friend has a pair of 2.5s and they sound awesome. However I don't want to go full floorstands yet. Thanks for your help.