i don't buy anything that uses electricity at Walmart.
Fluke is tops but expensive. MCM Electronics has TENMA meters that are loaded with features for much less than Fluke. Decent quality also.
Any basic DMM will get you Voltage (AC/DC), Resistance (OHMS), and Continuity. Measuring current can be had, but only small amounts (less than 20A) until you get into clamp meters.
Of note: TENMA has a clamp meter that measures DC Current for around $50.