I just got finished trying 19.9 and, I hate to say it, but it crashed and burned for me. I kept getting a "System UI" stopped working and it looped forever(infinite loops...good stuff). I also disliked the second dock above the hardware keys and I couldn't find a way to get rid of them completely. I also could not get the Paranoid.apk to install. Same thing for version 18.So far version 18 is much more what I want. There isn't a second dock, but I still don't like the split screen setting menu. Otherwise it's much smoother than 19.9 for some reason which is odd. Every now and again I'll open up a menu and it'll just kick me out and I just have to reopen it..
Otherwise I like the concept and direction the ROM is headed in.