My oldest is my first, not very old, just from 2007. It's a NoID Phal bought as a birthday present by my Mum.
It almost died in 2008 when I repotted in a bad batch of bark (my first orchid repotting and I didn't realise there was a problem with the bark, with more knowledge now I would never have used that bark).
But that's what first brought me here... trying to save it. It's still alive thanks to advice here, but it's never fully recovered and stays as three smallish leaves. However just now it has the most roots it's had since it almost died which is a good sign that maybe it will get going again soon
While it's not my favourite, I'm rather fond of it because it was my first, and would be sad to loose it.