Because I do a lot of automotive electrical, I bought a meter from AutoMeter. Is is a full function, auto-ranging digital multimeter and a clamp-on that measures both AC and DC amps. The clamp jaws are much smaller than most - they will circle a max of 1 or 1 1/4 " OD wire. It has a peak hold function so you don't necessairly need to see the face when you measure. It was a bit pricey at over $200 but it is remarkably versetile.
Not a clamp-on but I bought a handful of the Harbor Freight $5 digital multimeters and scattered them around. Every car, the motorhome, the shop, the kitchen all have meters for a quickie.
