After buying many many clems in 2010 and 2011, I think I only planted a couple last season. But the one below is for sure on my "to buy list" for 2013. I l really like my SAC and this variety seems to have some improvements. I have already sourced it from a nursery in my area.
http://www.provenwinners.com/plants/clematis/sweet-summer-love-clematis
Sweet Summer Love for 2013
Great blend of colors on that one.