I have the G20's and the R11's (L90).....I rented the L85 Nikes back a few weeks ago when they had free rental weekend. I loved them, they are very close to the R11's. If i had the credits i would buy them.
The G20's are very good clubs, i know Legends that use them still.
You are still at Master tier, you dont need that extra 5-10 yards from the 3 iron just yet, but i would say this. If you get the Nikes, they will be the last set of irons you will ever need, even when you reach Legend.