Firstly, I don't think that your sarcastic remark about reading was necessary, okay. I made an error, I am human.
You said "I'd recommend going with a HV device that can go 3.7v if you prefer 3.7v, that way you have a better battery, faster recharge time, and if you want bigger vapes you need higher voltage. Carts are gross imo."
How is your suggestion going to keep her husband from burning out atomizers if he is not keeping them wet enough?
Yes, the batteries in the larger mods are better then then pen style batteries, as far as the recharge time goes, that is going to depend on the size "Mah's" of the batteries that are going to be used in the device. Yes, if you want a stronger vape you will need to get a mod of 5v and above.