Northern Diver guardian TOP CHOICE!
I had one for 4 years never had a problem really tough and stands up to being abused.
Plus there are LOADS of D-Rings a few to many IMHO but i loved mine.
Only got rid of it as i lost a couple of stone and it no longer fitted very well (It was an XL)
It sold on ebay for approx £45 so keep an eye out there, as i'm sure others have told you a BC is not the thing to spend huge amounts on and as this type is well made there is nothing wrong with a 2nd hand one!
Ian
**EDIT**
One on ebay size medium