Pudgymars:
I have skin issues related to both chafing & allergies. Aloe vera is my number one choice for when it's raw (especially once you've left it in the fridge for a couple hours, great for sunburns), but I don't like it or creams much for stopping rubbing- too moist. I prefer sticks (kind of like deodorant) usually marketed as "anti-friction" (some are made for runners, others for bigger people). I haven't had any reactions to all the brands I've tried so far, and it's stopped both tenderness and sores from developing, so I recommend them as an option!
Adding onto this, if you end up with sore areas, slap a bandaid on the area. I like cloth ones because they don't fall off so easily when you sweat.