I would really like to get into IDPA shooting. After watching an IDPA match in the stock service division, it seems that glocks rule the field w/ some DA guns (beretta, Sig, and HK) making an appearance. I currently own a CZ-75bd and love the way it shoots. But I was told that I wouldn't do as well w/ it because it doesn't have magazines that fall free from the gun and I would lose time having to manipulate the magazines to eject. And if I mod the gun so that the mags fall free, I would no longer be able to use the gun in the stock service division because the gun would have been modified beyond IDPA rules. Is this true??? If so, what would be a good gun to get for IDPA, a glock 17?? Thanks in advance.