Hi there, and welcome aboard.
Nice choice you have there. You will get a lot of support on here for buying any of the above.
But you may also get some telling you to stay away from Ducati sports bikes for the road.
Not me - I love them as a road bike. They have a fairly 'committed' ride position, but when you get used to it, and the speeds get up, it is so RIGHT.
The later bike will usually hold its value better, but there can be exceptions. I am a very happy owner of an '07 1098S, and can recommend this model, which I still love seven years later.
However, an 1198SP for not-too-much-more would have to be worth the extra $$.
The 1199 Panigale is a rather different animal, and you really need to test ride these alternatives to see which one suits you best.
But on the face of it, the SP sounds like the highest-spec of the three. The 1X98s have a more extreme riding position, and awesome grunt at low revs.
The Panigale has a more 'ergonomic' position, and an engine tuned more for revs. But it needs more dismantling to service, so it depends on how long you intend to own it for, and how much work you intend doing yourself.
My personal recommendation of these three would be the 1198SP.