Only counting wins, I would take Kipper every single time over Varlamov, but that's for a single season, factoring in that it's a keeper league, Kipper's value takes a huge hit, and Varlamov's recieves a big boost.

Not knowing what your team looks like, I say that f you think you can contend for the next 1-2 maybe three years go with Kipper, but if your more middle of the pack or rebuild go with Varlamov.