I bought an used Xperia and installed Sailfish on it. LOVE IT! The gestures feel so natural way to use phone, ambients make it look badass and the program management is really creative.

Android app support is what allowed me to transition because of banking apps etc. It's not 100% polished (especially the Android app usage) but at its worst works well enough and at it's best, the experience IMO tops any other phone OS that i've used.

Wish it had more native apps though.