Have had both levels of G20's since I got to the level where I could buy them and have loved them ever since, I rented the TM driver and 3w today to see what the fuss is all about, No discernible diff in distance from the driver, just a faster meter, same with the 3w..I would certainly recommend the R11 irons over the G20's but that's another topic altogether..
I will NEVER give up my G20 driver or 3w until L95, end of story..
Good luck with your ultimate choice :-)