Depends what you want to do with it, the $20 Chinese meters tend to be a bit less reliable, but they'll do the job. They often tend to be de- or re-branded, but I'd go for one based on a B-Side or Aneng design.
The Uni-T UT61E at $50-60 is generally considered as a more reliable and better performing bang for you buck meter tho, if you want to spend that little bit extra