either one of these iron sets are WAY better than the G20's, or any other irons currently available ..
i have both sets & also used to play with the G20's .. there's really not any comparison & u'll notice the difference immediately .. especially in terms of accuracy & stopping power on the green ..
the trade off is a faster mtr speed & this is where ball selection can help .. i use Nike's since they have a higher feel rating than the Callies for example & they provide more spin control ..
the R11's are obviously the best, especially the 3 & 4 irons .. the Bladez are also an excellent set with a slightly slower mtr, but the long irons don't stop quite as well as the R11's .. the value of the R11's are really experienced with long approach shots into elevated greens ..
gud luck