You need to mix it up more and drive 'em all. If you got 'em, drive 'em. Not one of those cars is gaining any value regardless of the low miles. It ain't an Enzo.
Hey... who do you have so many cars anyway?
Ok... that aside... I would be rid of the RSX if anything. Upside down or not. If you really have a clean, stock MR, keep that because you won't come across one of those again and it's kind of an iconic style for that vehicle (even if it is a shopping cart
) Drive that damn white S2K a lot more and enjoy it. Once you get a 370 you will not have need for so many cars.