I've had Phil blue several and have been very pleased.
So far I've done the surface prep on all but one and had him do the blue.
The one exception was a sporterized Swede M38. Fellow I did the work for wanted gloss blue comparable to that of my Monson Mass Dan Wesson. Sharp edges were sharp, screw holes weren't funneled and the blue itself had real depth to it. Looked great.

"There are three kinds of men
Those who learn by reading
The few who learn by observing
The rest have to pee on the
electric fence and find out
for themselves."