Interesting, but no mention of making the base with cornstarch, our got-to recipe.
Skimmed through the ice cream maker section. Yes, we are on a low budget for such things and just amateur homemakers so I looked up the ICE-100 maker which is what we have used for a long time now. It's $49.00 in the States...$89.00 in Canada. Yup. That's how it is. Always.
And as for the heat problem...I use two small bungee cords and place two plastic coated ice paks around the machine and it does a fine job. True, I can't make back to back portions of ice cream...but I can easily do one a day and sometimes even two a day.