No problem whatsoever with Paranormal 250c.
I have three of them.
The Paranormal is one of the best vape devices money can buy. The board inside, a full blown computer with an ARM microprocessor, works like a dream, and is continually serviced by Evolv via software updates when necessary.
I find myself changing display font and font color, replacing background images, the entire profile sometime; a lot of fiddling which is impossible to achieve with the more common Chinese devices.
The battery door is a compromise. It could break if the
device hits an hard floor, but we live in hope it doesn't happen.
The battery solution of the Therion was many times better in my opinion, it resists all kind of falls and other mishaps.
But. A number of users started to complain that the solution torn battery wraps, so
lost vape went for a traditional flip battery door on the Paranormal.
Except that I never had a battery wrap ruined by the Therion battery compartment; it just required some manual dexterity - which somebody may possibly have lacked.
Go easy with the Paranormal, very few other mods can be said to be better...