I have K1200S 2008. It's a very good bike, but a bit different from the others. It has Hossak front suspension. I don't want to discuss which suspension is better, but Hossak feels a lot different for sure. I suggest you test ride K first. Some people likes it, some hates it. There is another reason why you must insist on a test ride before buying the bike. The early models had several issues and one of them was a transmission problem. You can't notice it just looking at the bike or riding it slowly around the block. What happens is the 2-nd gear pops out under hard acceleration @ 8,000 - 9,000 RPM. You have to make sure the bike does not have this problem. Otherwise, you'll end up replacing the tranny and the whole clutch, because BMW does not produce an old transmissions anymore and the new one requires an updated clutch basket and hub. The total cost will be ~$5,000 for the parts only!
BTW, don't worry about fueling problems, they are easily fixed by PCIII, although the installation of it is not simple and took me about 5 hours.