[Elecraft] Paddles for K2: Which one(s) and How to?

[Paul Clay]

I've always used a straight key, and want to learn 
to use paddles with the built in keyer in my K2.

What reasonably priced, good quality brand/model 
of paddles would you all recommend?  Something 
that will work well for 15-17 words per minute 
(slow, I know) is what I'm looking for.

Any tips (books?) you'd recommend on learning to 
use paddles or is it just "dive in and 
experiment".

Thanks in advance,
Paul
N6LQ