I have been a loyal fan since Battlefield: Modern Combat. Loved Battlefield: Modern Combat 2, Bad Company and Bad Company 2. I am not a COD hater, in fact, I love COD single player campaign, much better the BF single player, but hate COD multiplayer. On the flip side, I love Battlefield's online play, and don't like the single player campaign.
Downloaded BF3 Demo today and so far it wasn't clicking with me. It felt too much like COD, but I will still give it a chance. I didn't like the demo of Bad Company 2 when it came out, but as I played more maps and got use to the new interface, I loved it.
I love the BF online play mostly because of the vehicles and larger maps. I tend to have a slightly longer life span in Battlefield than COD.
I really hope this Battlefield pans out. The one thing I am excited about is the ability to pilot a jet. Reminds me of Frontline: Fuel of War (which by the way, despite the glitches, wasn't a terrible game).