I recently bought a set of Ping G400 irons with AWT 2.0 regular flex then a few days later I was able to buy a set of 900 Hotmetal 4-GW with Modus 105 Stiff shaft.  I got a great deal on the hotmetal so couldn't pass them up.  They have not came in yet so have not been able to hit them. So, I have a few questions I hope someone can answer. First, has anyone hit both sets and what are your thought? Second, what's your opinion on the modus 105 shaft? Third, just some thoughts on the hotmetal irons in general? Thanks in advance for your input!!!!