Of all the Ducs, the MTS is the most versatile overall. I had an '05 for a while, and while the engine and other things are really different now, the basic seating position is pretty much the same. There is a Ducati Forum devoted to the MTS...join it and read all about them. The MTS can be a viable touring bike with the right bags, rack, topcase. The seat is high...if you have a 32" inseam, that's not an issue at all, but much shorter than that and you're not going to be flat footed. Of course, the bike is so light, even my 29" inseam was not a big problem. Exhaust systems are very expensive for them, but are almost a must to get the "Duc Sound". From what I've read, they've improved the seats a great deal...the '04's were horrible, the '05's better, and from what I've read, they are now pretty good and offer a couple of optional seats. As far as looks...most people either love 'em or hate 'em. I'm in the love catagory, as I think the unique styling from Ducati is unlike anything else on the road and it screams Italian, especially if you get the red color. Service is expensive, but as mentioned, they have extended their "major" service intervals to 15K. But, that's like the difference in service costs between a Chevy and a Mercedes/Volvo/BMW/Porche.
I read an interesting statistic a few years ago...about 50% of Duc owners also have a HD in the garage. If that's true, I think it's because of the distinctive look, sound, and feel of the L Twin engine.
Just be prepared to be SHOCKED at the speeds you can attain in a hurry, but the suspension, brakes, and tires are rock solid, as is the handling. It is really easy to flick it around in the twisties, and that is a Ducati's forte. I sold my '05, not because I did not like it, but could not justify having it, an SEUC, and a SEVROD in the garage at the same time...plus, one of the last times I had it out, I looked down at the speedo and was doing 110mph and still had another gear left. And that was an '05 with an air cooled, 100HP (+or-) motor...160HP on that bike would be an awesome ride. I decided I'd probably kill myself on it, so chose to sell it. I bought it used, and sold it 1.5 years later for about what I paid for it, after a few add ons/changes I'd made to it. Just be mindful that it's going to cost more over time than would an equivalent Suzuki or Yamaha...but, it's a Ducati, after all, and IMO, unique and more appealing than any other bike of it's kind.