I use Titegroup for all my pistol loads, to include 9x18. It's a flake powder, so it meters better than extruded... but not quite as nice as spherical. Using my RCBS Uniflow, I haven't had any issues with consistancy as far as powder drops go (I recently bought the micrometer adjustment screws to ease with dialing in). The cases end up being fairly sooty, but all in all... no real complaints as far as Titegroup being dirty. Nothing a simple one-pass with the boresnake doesn't take care of at the end of the day.
If you prefer a spherical powder, I believe Ramshot's entire line is spherical. They don't list 9x18 on the load data sheet... but the ballistician at Western Powders is really quick in getting back to you with recommended loads. I recently asked about 6.5x50R and got a response within 36hrs. (If you ask him, please post up the data... otherwise I might ask myself, out of curiousity)
Guessing the powders in their line up to use would be either ZIP or True Blue.
I've been happy with Titegroup. I've only done fairly small batches of 50rds at a time so far. Finally got all my nickel 9x19 cases trimmed down and sized, so I'll be finishing up my first decent-sized batch (500ish) this week. Great to be able to load up for my CZ-82.
Now if Berry's would only bring their 95gr .365 bullets back.
At a time when I was looking for more... they took them off their lineup.