Fluke makes great meters, but they are expensive. Pinball Ninja (Clay) had a recommended cheapo, I'll see if I can dig it up. Really, anything with continuity beep, and a diode test would be fine. I like auto ranging. Every basic meter will have ac and dc voltage and resistance. I used a cheapo Greenlee that came with a plug tester and induction tester for like $25 for awhile and it was fine. I don't think you need something super fancy.