derekortt: The Bladez are said to be only a small step below the R11s. The main difference is that they have slightly less spin than the R11s and slightly less forgiveness (though the forgiveness is still quite good)
I would say baldez have less trajectroy too. I know they both say high but the R11's have a hgher trajectory, especially with the longer irons like the 3 and 4 iron.
The bladez are a great set of clubs and you can score very well with them. I don't know about the G20s, never had them