To decide which Titleist model if right for you I recommend reviewing the company’s fitting guidelines which suggests strongly that you start on and around the green when selecting a golf ball model.
A forged carbon steel clubhead further enhances feel at impact while an internal face perimeter cut-out design increases the effective hitting area on the face by about 15%. This provides more forgiveness on off center hits and better ballspeed retention overall.
Other features include a thinner looking topline an angled back area for more MOI and stability and an overall more refined look. Like the original 0311 irons the GEN2 models are built with adjustable tungsten and titanium weights that can be tuned to produce an extremely accurate fit.