tell me why a ST/RT?
If are looking at aggresive sport touring, then I would step away from the RT. Way too big, and I would classify this as a touring bike with a little juice for a little fun. I think you might be looking for either the new GT that should be due out this coming summer (knowing BMW, probably late summer) or a K1200RS that is the best bike in the world! these are sport youring bikes, with an emphasis on sport.
You might be able to find a decent 02-04 K1200GT, which will have everything you asked for. But the ST/RT can be fitted with everything as well. So the erognomics should not be much of a factor. Although, the ST/RT will be a little more comfortable, since it is a touring bike.
As for maintance on the ST/RT, not many people on this board are familar with the R bike maintance. The K bikes are pretty straight forward, the valves are not too difficult. You will notice something about the integrated brakes, they will take some time to familarize yourself with these. All in all, BMW has put the best bike on the road! Do get me wrong, the futura is an excellent bike, but you might enjoy the K1200GT a little better.
Is this enough information, do you want more?