Frank, my locals guys for $500 were giving me there best work IMO It really did show on the track with having a bigger name shop do them. I am not saying you wouldnt do a good job on heads for your locals. Just the local talent on heads for me isnt the best, for me to send them out is a better deal to gain more power.
Case in point you like the Dart Plat. 230, I have good friend that live right down the road who has them on his 406, local guy did some port work to them he told him how he opened them up and what not and they did flow a little better but still I didnt think it should run like it should. He took it to another builder further away and gained 75hp by letting him work on them some more.