Have you thought about Glocks?
There are certainly more rare models out there, Tanaka makes a browning hi-power, but I don't think its really a skirmish ready pistol, more of a colector piece.
Not sure if your looking into gaming with them, but the most common and practical pistols seem to be variants on Glocks, M9s, Sigs, 1911s, and 2011s.
If you simply want to do research as to what is availibe, check out some of the big Hong Kong based retailers. I like Ehobby Asia and Redwolf Airsoft.
Remember, you can't import a pistol from those sites, but they will at least give you an idea of whats available.
If you find a pistol you like on a hong-kong based website, expect to pay 2 to 3+ times as much for it in canada, depending on its condition and rarity.
It's better to light a candle, than to curse the darkness