Surely all you'll get in this thread is a wide variety of other peoples' opinons. I realise that you may find some of them worthy of consideration, but were it my collection, I think I'd want to make my own mind up.
That's not to say that the disussion isn't interesting, just that were you to get rid of something and later regret it, would sway of opinion in this thread be any consolation?
My interest, here, is what bikes you are going to keep / let go, and why. Sometimes it makes my teeth itch to think that people let committee influence their personal choices.