Good question on the batteries, I have a HellCat pro and when I bought it I just went ahead and also ordered an extra battery pack for a back up just in case I needed it out in the field but I never have yet, I love the call and it is extremely light and sounds very good. My partner has an X-24 and a lucky duck but 9 out of 10 times we are using the HellCat Pro.not necessarily because it's that much better just because it's so light and easier to pack into stands.
. Bottom line is you just have to get one you're going to be happy with. My main reasons for getting the HellCat Pro were price at the time I bought it, it being so lightweight and I knew it would do more than I needed it to here in North West Pa. Good luck to you I'm sure which ever way you decide to go you will be happy with either call.