Voltage Kills Atomizers if you aren't careful ... Even if you are, you can still lose them quite easily.
801/4072's are the only atomizer I know of that perform optimally at high voltages ... that doesn't mean people don't love 510's/901's at higher voltages, 801/4072's are simply built a bit stronger ... you can sometimes see as much as a single ohm of resistance increase in pen atomizers due to their structure. You are seeing 4.75 - 5.25v with the Prodigy. If you are having problem killing atty's at that range, 6v can only get worse. Best bet may be to drop back down to 3.7v or, like a previous poster stated, get an 801 adapter and start using those on the Prodigy
EDIT: With that said ... I exclusively use an 801 on my Prodigy and a 510 on my Protege. I use my Protege roughly 75% of the day.
801 on a lower voltage device is weak IMO. 510/901 perform great at lower voltages ... and vice versa ... 801 performs best at higher voltage and 510/901 don't IMO ...
Again ... just opinion
Hi Steve, I am going to 3.7 simply for preserving my stash of attys. If I had more time and money I would try the 801. But, time is growing short I fear and I am committed to the 510.
Kevin