The local homebrew store (Midwest) actually recommended that I use WYeast's Whitbread 1099 for a batch of cider. It's an ale yeast so I'm not completely sure what the rationale on recommending it to me was but I believe it had something to do with being a little more fruity and not so aggressively eating the sugars.....leaving it sweet and not as dry. I was skeptical but I just cracked the first bottle of it this weekend and I must say it was a little sweeter than when I use the Wyeast's traditional Cider yeast. Worth a shot.
you could use the same yeast your using and add lactose to it. Also I think there is a apfelwein thread floating around where the guy made 5 batches with 5 seperate yeast strains and I believe he said the WL300 hefe yeast made it very tropical but im not sure of the number it may have been a smack pack I'll try to find it for you.