The tungsten weights in the TaylorMade Rossa CGB putters do make the putter head feel a little on the heavy side, but it does not affect the feel of the strike which overall is very good.
Previous Rossa putters had what we felt was a very small insert area and at last this has been increased in size to be the full width of the face on the TaylorMade Rossa CGB putters to allow us non-tour mortals who don't hit it out of the centre every time a chance of a consistent roll.
Whether the anti-skid grooves make any difference was hard to tell, but the TaylorMade Rossa CGB putters are is the best feeling putters from TaylorMade we have tried to date so they must make a difference.
This evolution is a big step in the right direction and they are catching up in performance terms to Odyssey & Scotty Cameron, even if they are not quite there yet.