The first impression I had when I racked theses screws up to my harness was, "wow, I don't need to have these AND a quickdraw..." These cut down on weight very quickly due to that. Plus the can clip directly to your gear loop saving you (in my opinion) the awkwardness of the plastic racking biner. I can easily line these up in order of length on my gear loops and not have to fumble through the screws on the plastic biner.
Another great thing about these is how fast they go in. When following my friend, who has BD turbo express screws, I often forget to give him all of them back when switching leads. So occasionally I use the BD turbo express screws. Before I got the Radion screws I thought the BDs were fast. The Radion is easily way faster. Plus you have the added benefit of being able to clip your rope before getting the screw all the way in (probably only beneficial psychologically, but I'll keep doing it anyways!).
Now the minuses...and yes there are a couple.
-There is only one option for draw length on these screws, however, another review mentioned that you would have to clip a quickdraw directly to the carabiner to lengthen the draw...there is plenty of space within the draw attachment point to accomidate another biner (for a quickdraw), so this is not THAT big of a deal.
- The turn handle does not fold down. This can occasionally allow the rope that you are pulling up behind you to unscrew the screw a little bit. Again, nothing too major, but it is something.
Ok, so I've used lots of different screws: Older Chouinards, Nasty old Soviet things, Smileys, BD turbos, BD turbo express, and now these. I can easily and honestly say that there is no such thing as a perfect ice screw, but these come as close to perfect as any I have used.