Normally, I'd say get the 15-shot model. The 10-shot weapon is offered for states or other localities that restrict possession or purchase of newly-manufactured high-capacity magazines. The weapon itself is exactly the same. The only exception to this recommendation would be if you can get the 10-shot model at a steep discount. Spare normal-capacity magazines will cost about $25-$35 delivered, so if you can get the 10-shot version $100 cheaper than the 15-shot model, then you could buy 3-4 spare magazines with the money you saved and come out ahead (Glocks are normally sold with 2 magazines).
Originally Posted by hardcastle
I know of no factory manual safety option at this time; all Glocks have a safety lever on the trigger. I would not recommend getting an aftermarket thumb safety installed, as I'm fairly sure it will void (destroy?) your warranty. The safety on a Glock, like all other handguns, is actually located between your ears. Keep your finger off of, and away from, the trigger unless you are actually shooting, and you'll be fine.
The plastic factory sights are relatively fragile, and the factory adjustable sights absolutely suck (remember, you are hearing this from a huge fan of Glocks). Get the steel sights if they don't raise the price more than about $25, otherwise, buy the least-expensive sight-option-model and plan on spending more money upgrading the sights. The stock plastic sights will work just fine until you firmly bump them against something, then they will end up dented, crooked, or laying on the ground/floor.
I'm not sure, but I think the two finish options you listed are just the way two different companies describe the standard Glock finish. The only factory color option I am aware of is the Olive Drab (OD) frame color, which has been discontinued by the factory (although I am sure there are still many available for sale). The appearance of the color of the slide has differed slightly over the years as Glock has used minor variations in finishing methods, but a normal Glock is basic black, top and bottom.
Recently, there is a Glock distributor that has marketed a Glock with a silver-colored slide finish. This is a standard new Glock pistol, but the finish is applied by another company, not the factory.
"Placement is power" -- seen in an article by Stephen A. Camp
(RIP, Mr. Camp; you will be remembered, and missed)