Which is better 36 volt or 48 volt cart

[Airone]

I'm a Brand new guy to the carting world and looking to buy my first cart. I need some advice please. I like the looks of the EZGO carts and am pretty well set on purcahsing an EZGO cart. Just wondering if I should buy a 36 volt D/C EZGO or the 48 volt A/C EZGO RXV. I plan on a 6" lift, 4 seater with 12" rims and 23" tires. I'll be using the cart in a campground with dirt roads, some small hills and a few light sandy trails, nothing crazy. I do expect to almost always have 4 people riding on the cart and I'd like to be able to get some speed out of the cart also ( 20 mph ). I've got about $4300 to spend. Any advice would be greatly appreciated. Thanks for your time!