I've been shooting with the Sony RX1 for about a month now and the Fuji X100s for a little over a week. I got up to speed with the X100s quickly since I've had plenty of experience with the X100 and X-Pro. I had both cameras with me during a busy weekend of shooting in New York City last week (along with the Nikon Coolpix A), and both have gotten plenty of work. I've written some about the RX1 here and the X100s on the Xspot forum, but I'd promised to do some sort of comparison between the two since they're somewhat similar by virtue of both being fixed lens 35mm (or equivalent) focal lengths with f2.0 lenses. While I question whether these two cameras will be directly competing for very many potential buyers, there are a lot of similarities and differences worth understanding for those who might be considering either.