You Sir know more than 90% of the people owning a cart.
You are absolutely right about sticking with the big 3. These three have been producing carts for 30+ years. CC has an aluminum frame. That's good if you live in the rust belt. Personally I like Ezgo the best. Best ride, best throttle mechanism, easiest to work on. Currently we are running a couple of Ezgos. I just put a single lithium battery in one today. That makes 2 converted to a single lithium battery with on board charger.
Why you ask?
1st = no watering the batteries. I'm always too busy or forget to keep up with this like I should.
2nd = since the battery is sealed there is no mess and no corroded connections to keep after.
3rd = the warranty is 8-10 years Of course the cost is double+ but it sounds like we will get our money's worth of use from them.
4th = a little higher voltage like 51 or 56 volts versus 48 so that means more power and speed. Nothing crazy but I do like things zippy.
5th = 300 pounds. That's how much lead weight the cart lost = about 1/3 of the total cart weight
6th = longer runtime than wet cell batteries and quicker charging.
Here is a pic of the install today... and my helper Keegan