Back in the day, Titleist was seen as a real players iron. With the launch of the Titleist AP2, all that changed. It was proven possible that you could get excellent performance but also a degree of forgiveness. The same can be said of the Titleist T300 Irons.
The Clubs have a midsized face giving you confidence over the ball. Twinned with this is a large helping of forgiveness. The clubs have tungsten inserts in the toe, increasing MOI. What that means for you as a player is that it is less likely to twist with off-center shots. A straighter clubface on impact means straighter shots.