The only "problem" with a digital is that you MUST set the endpoint correctly or you will fry it.

Digital is the way to go IMO not only b/c of the extra speed and tq, but the have better hoding power when the wheels are turned.

It all depends on what you want to spend. Ebay and servocity.com are good places to look.
Hitec has a tremendous warranty. That may be a thing to look at.