Bored of COD4, need a new Shooter for PC

[loki]

Currently bored playing COD 4. Don't get me wrong I don't think it's a bad game, in fact it is great but its just getting a bit tedious even with the release of the new maps.

So were after a new FPS to play online. More than happy to wait for the new BF2 patch to come out. I was considering getting Frontlines:Fuel of War or maybe Rainbow Six Vegas 2. So for an online shooter, how do these two stack up against BF2 and COD 4 respectively. Any other suggestions, greatly appreciated

[MarcLister]

Would Splinter Cell be too far outside your wishes to be a good suggestion?

[Justsomebloke]

Nothing compares to a 64 man Infantry only BF2 server, In fact I'd go as far as saying nothing even comes close.
Get Spec forces add on & play some Infantry only Spec forces, New maps & new weapons & still plenty of 64 man IO servers up & busy, I've been playing a bit of Spec forces myself lately & it makes a nice change from vanilla.
Maps are proper dark & moody so there are plenty of Enemy in your face crap your pants moments.
It has to be said that many people are coming back to BF2 & the game online is not even dwindling let alone dying off, Far from it.