Alex (Flipside) is right; how can I argue with a man with a name like that?
Let the Ti arrive. Set it up. Use it. Then make some space by disconnecting what you fell you can live without. See if you miss it. Then re-assess.
I'm not one to snuff my nose at cool vintage synths or new monsters like the Ti. They've all got their place in the world. All I know is that I freaking love my KC to bits and bits and tiny bits and I would cry like a freaking baby if I ever lost it. I imagine the Ti is that good or better. Give it a try mate! The other synths ar presumably paid for, right? And this one was free, right?
Test out the Ti, take your girl out for a nice dinner or cook her one at home, and enjoy the moment. There's a time to smell the roses in life, so blow your nose and walk out to the garden. Chin up, mate!
Good luck,
-Alex