I pulled the trigger. I went with Stan's recommendation: a kronos S2. Because of his amazing return policy, I got an S1 as well. I figure I can return the head that performs worse for me. From your comments above it seems like I might use S1 as a daily driver and S2 for date night...
Congratulations! You're bound to love one, if not both. If it goes really well, consider joining us over at BATTS (Brotherhood of Above the Tie Shavers)! Either way, do let us know what you think.