Actually the 801 atty might be about the best of all worlds for VV. They are around 3.0 ohms, in general, and so should be able to hold up fairly well to higher voltage. Of course if they are very used, the HV might push them over the edge into trash can faster...just using an atty shortens its life, after all. But the 801 is known to be quite hearty, so I would give it a shot. It still might be too low in resistance for around 5.5V or higher.
In the 510 world, the regular Joye atty, at around 2.5 ohms, is probably ok up to around 5V or so, but not a lot past that. Although people use them all the time at higher volts...they just don't last as long.
A good metric for these things is wattage, or the power (heat), the atty produces. Watts = volts*volts/ohms. My 5V PV with a 2.5 ohm Joye 510 atty will give watts = 5*5/2.5 = 10 watts. 10 watts is considered by many the "sweet spot", but its a personal preference, of course. Your 801 attys will vape at 5V at around 8 watts. More than around 12 watts, and you are likely to kill an atty fast.
So you see, its not really the voltage, its the watts. And now you can better make judgments about these things.
Vape on!
