oooohhh that's a loaded question
Batteries- Lithium or standard AA/C/D or rechargable
Bulb- LED or Incandesant?
Size- Pocket or monster carry?
Brightness- Second sun or enough to see by?
There are a number of options
LED Maglights are quite good (the smaller AA ones)
going up to the indestructible Surefire torches
I have a number of both types. My everyday favourite is a Surefire L4 that i run on rechargeable batteries so i don't have to worry about the expense of the lithium batteries.
Give us an idea of what you will be using it for and we'll see what we can come up with