do you have a preference in how your vibrators are powered?
I seem to be the odd one here and prefer plug in. I usually only fap/play around my bed and something that I can just plug in and out easily without having to put it on a charging bay just seems easier to me.
I don't really care, I'd like to have more rechargeable ones though. I've got rechargeable batteries so it's not a problem to get battery powered toys, I don't usually pay attention to the power source unless it's watch batteries, I don't have any of them and they never seem to be strong enough.
I prefer batteries, because rechargable is more expensive (usually) can be irritation if you need to charge mid-session instead of popping new batteries in, and because if it has an own batterie they toy is easier to kill.