Looking for cal options...

[BUBBA]

I currently have a TU cal which is by far the sweetest running +40 3-bar MAP cal I've ever ran, but I'm going to be changing over from a fastburn head set-up over to a g-head w/ header set-up and know fully well that my cal is not going to run properly. This is for my 91' Shadow. It's a Sunday driver so it has to idle great etc... hence why I currently have the TU cal. SDS would be my ultimate pic, but cost is really a factor. Trying cal after cal after cal to finally get a correct one gets annoying. I've heard of this Megasquirt, but how friendly would that be for a Sunday driver? I'd like to go to a dyno one time to get everything adjusted then be done with it. Any suggestions?