I got the SP-01 Tactcal and had Stuart do some work on it for me. I really can't remember the cost but what ever it was it was worth every penny. I do not own a Shadow but I am seriously considering getting one. I would take Stuarts advice, I would get the best gun you can afford all in. If you have the cash but try to save a few bucks and are serious about shooting you will spend the money eventually and will probably cost you more in the long run.
At least thats how it has gone for me most of the time...........
Good luck which ever way you go you will be getting a fine handgun!
RCG