I sent off my black Diablo 6.0 and Verde Ithaca Murcielago. I don't miss the 6.0 at all; the color was boring, and the engine and interior were nothing special at all. I also didn't like the 6.0 revisions to the shape, so I'm happy to have the copper VT, and I'll get the AUTOart version of the SE30 when it comes out.
I do miss the green Murci, but I'll get another one eventually.
I totally hear you about the UT F1 LM being 10 years old. I guess I expected a little higher quality, given the prices it commands. Brake calipers would have been nice. But at the end of the day, I recognize that the premium price it now commands is really only due to scarcity and the subject matter.
I'm still willing to sell my LM for $150 + shipping, but haven't had any takers yet. I've declined a few trade offers; I'm looking to get two models in trade for it, or one plus the difference in market value in cash.
The longer I keep it, the more I like it, though. The orange color is really great, and the marked tires give it extra presence on the shelf.