I guess I'm going to be out on a limb here - it's ok, I'm used to that
My favourite is the Wild Mouse. It took me a long time to summon up the courage to ride it. (It has scared a lot of people - including my mum!) But I love it - I come off it every time with a big grin on my face.
Second favourite would still be the Nash.
I know what Aly means about the PMBO though - that lift hill used to get to me every time. But somehow I am a lot less nervous about rides than I used to be. Probably because I was a late starter, and only started riding coasters frequently about 3 years ago.