Pros: Purchased this to replace an SLI rig of two 9800GTX and was definitely worth the upgrade. Purchased primarilty for Battlefield and it plays BF4 at high and ultra!

Cons: None so far...

Pros: Definitely work as designed. I have two mastif/rottweiler mixes that liked to roam out of the yard and didn't listen when called. No more! Only had to zap one once and he now responds to audio only on the first beep. Neither have run off since putting the collars on. Battery life is good, a charge will easily last a week and it only takes about an hour to recharge.

Cons: the collars have to be pretty tight in order for the contacts to work, a lot tighter than a normal collar. The remote has a +2 button that increases the zap if the dog doesn't respond to the setting applied. The way it's positioned, it's difficult to apply and generally will require two hands to push the +2 and the zap button simultaneously. Fortunately, I've only had to do this once, they learn very quickly as the collar is extremely effective.