The CR Speed is a good holster. It has a positive lock and is very quick. Now, in side by side tests, it only gets me about .1 to .15 on the draw over a Bladetech DOH. That ain't much--and if you're just getting started, you might be better served with a simple Kydex holster. Not as adjustable, and they will put wear on the gun where the CR Speed won't, but you'll save a few dollars.
I'd avoid the Ghost holsters. Seen a few DQs because of that design (dropped guns), but Safariland are good, if you can stand the leg pad.
Ps--This is for Limited or L-10, right?