Even if your PC can only run the game on medium or even low, it still looks better than either console versions. PC version also gets 64 players on a map (although it can get *too* hectic at times on the smaller maps), compared to only 32 on consoles.
Now to the cons of PC.
You have to start the game through your web browser, so if you have no Internet, you can't play campaign either. The support team is iffy (EA), so if you have problems, you're better off reading a forum or a blog. I called in 3x for EA, two times, I met some Indian guy (no racism intended), who had no idea what I was saying. The third time I met a really cool American guy, who helped me and answered all my questions and even gave me a 15% off code for their games, which was awfully nice.
You said you wanted to play with your buddies, so obviously, you won't be if you get the PC version.
IMO, I'd get the PC. Better graphics, and generally a lot smoother game play than consoles. Maybe you can even convince your buddies to get a PC after showing them the game on ultra.
