My .02:
I've not been float fishing that long, but I have to say that the casting reels work really well for this technique. I have a Curado (regular, not super-free), and have not run into any problems with casting light weights and floats. The fact that you can freespool and control the speed of the float with your thumb is a great advantage. No line twist problems either. The gear ratio allows really quick retrieval of the terminal gear too. Go with the Curado, IMHO.
_________________________
Matt