You can never go wrong with a leather jacket. I like the one on the top right corner. They're very versatile. But invest in a real one or a really good fake one; I bought a fake one that looked good, but it felt kind of rough and it didn't last long.
In my honest opinion, leather on a woman isn't very tasteful... it just doesn't look classy. I think ladies look sexy in wool and peacoats, though... that's just me... but leather is more of a guy thing, it's just how it is. It's sort of like me going out and buying a pair of Uggs. But, if I had to pick any one of those, I'd have to say a brown one... but still... leather on a lady... no.
Leather jackets look awesome on girls, as long as they have the right cut so they show off your figure instead of making you look square. Like that top center jacket in the first link, or the one you showed in the update(I really like that one!). Go for it, I'd say, especially since you're buying synthetic!
i have one I bought from forever 21 and it is great! I love it! you can dress it up or down and its a perfect addition to an outfit when you feel like your outfit is missing something. They are definitely in right now, also.