At $25 and under they are all shit, but a $25 can actually be a lot less shit than a $10 one example.
So just make sure you spend all of those 25 dollars.
The pros kit MT-1260 has all the bells and whistles for $18 though.
But I concur with Simon, the Amprobe 220 is probably the first and cheapest step up to a decent meter.
Dave.