Someone may tell you pistol A is great, but if you buy before you try you may end up with something that sits very uncomfortably in the hand and will therefore not get used much. Best thing is to go to a couple of games, or to a local airsoft retailer if there is one near you, and try them out for size and feel. The M92 is a large framed pistol and if you have small hands it will feel huge and uncomfortable. Same and more so with a Desert Eagle. They are really big.
Glocks and 1911s are better in smaller hands, so too P226. TM guns are about the best there is and although "plastic" will work well even in the cold as the gun will not cool down on firing as much as a metal framed pistol, so can be used most of the year.
Go with what suits you best, get a holster for it that holds the pistol safely, but allows a fairly easy draw and get at least one spare mag for it, possibly two if funds allow. Unless you really want an electric pistol, stick to gas operation for both the feel and realism. And if you buy a pistol with a plastic slide, don't try using the stronger gases, as you will break them very quickly.