What's a good dependable iphone 5 case?

I tend to drop my phone quite a bit

If you're all over the place, try Survivor or Otterbox. If you mean dropping has in from waist height onto hardwood floor or something like that, a simple hard silicone+screen shield combo should work nicely-it's what i have now.

I have:
Some hard silicone case from Telus -$19.99
Zagg's Invisible Shield, Regular -$25
this way the silicone protects the back and absorbs shock, while the shield also absorbs shock and is really strong so protects from screen scratches.