Any of these I suggest:
Micron Compact AC/DC Clamp Meter - Altronics
(best as it allows measurement of DC current of less than 4 amps. The others lowest setting is 40A DC which is often too low to detect low current parasitic drain).
1000A True RMS AC/DC Clamp Meter | Jaycar Electronics
(the non contact Voltage detection is a handy safety future) if you plan to do any mains wiring work
or even this relative cheap one SCA Clamp Meter - Digital
You need something that in addition to normal multiumeter ranges has a DC low current clamp (some clamp meters are AC only) and continuity (although I would see that as a standard/normal multimeter feature).
Off course Fluke is recognised as the best but you could spend more on a Fluke meter than another car and still destroy it with accidental misuse.