You can use anyone.. you don't have to hassle alot in both ways
It's actually pretty good buy. I started using it as an experiment.. but turned out it's pretty convinient. I use it for the wall clock in my room. After charging it for 4-5 hours, it easily lasts for a month!
You can go either way, not much hassle
Oh yes, Rechargeable batteries are good both AA and AAA, I'm using Eveready batteries and charger. It also doesn't takes much time to recharge again.
I’ve used the ones by Duracell and they’re pretty good. Helps in reducing waste too as you can use them for a really long time.
No its fine to go with the regular ones . The AA and AAA batteries are not that special