I was wondering if FP was a good game to pick up or should i get Battlefield 1943? 
i cannot make up my mind if i should buy FP or not.

do NOT get fat princess! I was so psyched to get this yet was almost immediately disappointed once i started playing. I just posted a review titled "too much of a good thing" -- you should check it out. basically the online play is still fracked, "teamwork" is a great idea on paper but in practice it's difficult to achieve. expect to have a lot of frustrating 30-45-60 minute matches that grind out WAY too long.
 
at least, that's my 2 cents

Well I had fun with it. It seems to hit or miss in games with teamwork, though, but when you do have teamwork, its great.

I kinda agree with aliss, the games need to have LESS people ot be fun. Games are generally comprised of half bots half players but a simple 8 on 8 would fix that.

it was well worth it for me...

I got the demo today and thoroughly enjoyed it, though is the online just as good?