Back when I had my 962DCI irons, I used the PW from the set for years. It was 48°, and it was good for 135 yards for me. A couple of years ago, I replaced the PW with a 48-06 Vokey spin milled because my PW had worn most of the groves away. However, I lost a lot of distance. I was hitting it maybe 120, which caused a big gap to my 9 iron's 145-150 yards. I'm guessing this was due to the extra spin. I ended up selling the 48-06.
Now, I have replaced my DCIs with 710MBs, and I'm looking at the SM4 46-08 or 48-06 because I really like the feel of my other Vokeys. The MB PW is 47°, and I hit it the same 135 yards as my old DCI even with more spin (my swing has improved). I don't have easy access to real wedge fitting, so I'm looking to Team Titleist for any experiences regarding distance changes with the SM4 wedges.
Note, my other Vokeys are 54° and 60° C-C wedges. I would rather have more gap than less because I'm pretty good at working the 54 and the 60 through the gaps.