The Mugen Prospec driver set is excellent, with 1.5, 2, 2.5, 3mm regular, as well as 2 and 2.5mm ball drivers. I use 2 and 2.5mm Mugen electric driver tips 95% of the time, and only resort to the manual drivers when I need a second driver, ball driver or 3mm driver. I did use the manual drivers for everything for over a season with excellent results.

I have, in the past, had great luck with the MIP drivers, with the exception of their ball drivers. I managed to snap the ball tip off of the 3/32" Thorp ball driver. I did have the driver replaced for free.