I use a 50/54/58.
The 54 is an F with 14* and the 58 is a D with 12*.
I think it's a great combination given the drastically different sole designs and allows me to really hit any shot out of any condition. It's also forced me to improve my short game; meaning I can now hit similar shots with either, using slightly different technique to account for the different grinds.
I have considered going to more low/middle bounce options now that my new home course is quite firm, but I haven't really had any issues hitting shots, or full shots, with 14 degrees.