6 Volt Batteries and Where to go for Best Price

[Traveler2017]

Hi I was wondering what type of 6 volt batteries people are using and where to go for the best prices. Just a little FYI we have been using 2 12Volt batteries for the last 5 years and they have decided to pack it in at the same time. So we have decided to upgrade to 2 6volt batteries but am find lots of the internet and thought maybe I would check here.

Thanks in advance for any Help.

Dan and Donna

PS we are fulltimers and currently in park in Southern California