When you are looking for a meter, the basic rule, is that the more you pay, the more you get. You need to weigh up:
1) Which functions you need
2) How accurate is has to be
3) Whether or not you need things such as auto-ranging, auto power-off, PC interface, backlit display etc.
4) How much money you are willing to spend.
5) What purpose you are using it for.
As a personal recommendation, for general electronics, you should buy a meter with no less than:
AC Current 0-10A (preferably with a tong attachment)
DC Current 0-10A
AC Volts 0-600V
DC Volts 0-600V
Ohms 0 ohm - 10Mohm
Capacitance 0-1000uF
2% accuracy or better on all ranges.
A transistor tester may sometimes be useful, but is not really necessary.
The best brand, by far, is Fluke - however a Fluke meter will leave your wallet quite empty. If you don't need great accuracy, you can pick up cheap meters for AUD$20-$30 at your local electronics store.