When I started handgun shooting, one of my friends steered me away from glock, and towards a lim-10 setup with a kimber 1911. I then purchased a SVI 40 cal limited gun, and then later, a STI 38 super comp open gun. This was all in a span to two years.
The net result is that I am a C-shooter in three divisions. Not exactly my desired goal in learning this sport.
If I had to do it all over again, I would have gone with a 40 cal glock. Much less expensive, just as much fun to shoot, and very versatile in learning the sport.
I do enjoy tinkering, so the 1911/2011 is entertaining for me, and I have a lot of fun reloading different calibers. And with all that I have invested in the equipment, it is hard to imagine turning back now. But in terms of improving as a shooter in the most efficient manner possible, I've come to believe that the 40 cal glock is the way to go.
I think a master/gm shooter is largely independant of the equipment, and the additional money is best spend on practice ammo/travelling to area matches/saving for kids college education, rather than on expensive gear.
Just my two cents.