I'm looking for an electric kettle with these features:

1. Boils quickly (i.e. not like Zojirushi dispensers)
2. Metal on the inside, no plastic (specify if it's coated with
anything or plain steel)
3. Variable temps with wide range of possible values
4. Not more than $50.

It looks like Upton Tea has a winner for $38. But is it metal on the
inside? Is it coated? Any other problems with it? Anyone have it or a
similar kettle?