Im kicking around the idea of getting a different set of irons(Im currently gaming the G-15's). I would like something with a smaller club head and less offset. I love Pings so Im pretty sure Im going to stick with them. With my current finical situation Im not going to be able to get a brand new set so Im looking at used. I was wondering how much difference there is between say the S59's and the i20? How much harder are the S-series to get up into the air, how much worse are they on off-center hits ect... Any help or personal experience would be very helpful.