I've never had any deer bust me while using the regular one. I personally don't think it's needed since the radius isn't too far from the device and it likely dissipates into vapors before it goes too far to make much of a difference.
I use both whatever one I happen to grab when loading my pack I've noticed no difference but I agree the the original seemingly works better
I've also heard the original works better. That's the one I use. Some things are just created to increase sales.
I'm ready for cooler weather. At this rate I probably should've put some stock in Thermacell. I'm blowing through the gas and pads like crazy.