IMO very few mobile outfits can do the job properly - they tend to just fill and paint the scuffs.
I had mine done here:
http://www.thepolishedwheelcompany.com/
Obviously no good to you as it's miles away but worth checking the techniques they use - proper chemical strip, re-paint and lacquer. The finish actually looks better than new.
Cost about £260 all in - well worth it.
I had previously used a mobile refurber with a good reputation - the wheel looked dull and the repair was obvious. It was also much harder to clean afterwards. Might have just been unlucky but the difference between that and the recent refurb was enormous.