Dojo or Prototype or ...?

I’m about to start adding “funky” Look & Feel stuff to my Rails app and I was wondering what the general consensus (if there even is such a thing) is on JavaScript libraries.

I really don’t care so much about the ease or otherwise of making XMLHttpRequest calls; this is the least of my worries – it’s trivial to do manually. What I’m more interested in are things such as Drah & Drop, Accordians, Select-as-you-type, and other more general DHTML layout stuff.

Rails itself ships with prototype+scriptaculous which I’m lead to believe are quite good. My mate Andy on the other-hand has played a bit with Dojo and likes that too.

Anyone care to share their own experiences?