I don't know if this helps, but I wanted to raise some points to be sure things are kept in perspective.
It sounds like in your situation, very steep grades are experienced, which is not everyone's situation. Both Gen1 and Gen2 RTVs have a low range that allows for extreme pulling. Once I had to pull a 1,000 lb trailer loaded with 1,600 pounds of hay through soft ground - so soft that the trailer wheels left 12 inch ruts. My bro-in-law's jaw was on the floor afterwards and he was boasting to everyone. Moral: if pulling or traversing steep inclines, use low range. The second part of that is to have good tires. Just like on a car, tires can be the difference between getting stuck or not, or climbing or spinning.
The factory puts on some OK tires. Not useful in all circumstances. When mine wore out, for both RTVs I have owned, I installed some slightly larger 26x12x12 tires, but much more aggressive. You would do that same with an ATV if you have challenging conditions. The ones I used behave like tractor tires: GBC AR1202. They give me more flotation and much greater traction.
The last issue is transmission. For both of the RTVs I purchased, they came from the dealer with bad transmission settings. #1 was stopping so fast that my passengers often put their hands on the dashboard. After 6 months I was about to dump the machine but with internet searches, I discovered and relaxed that setting. #2 was set so that the engine revs were not matched up with transmission output. Basically idle and revs were too high for the speed. On the contrary, the adjustments could be just the opposite, not allowing engine RPMs to be high enough to deliver enough torque for the ground speed. Again, I did my own discovery to adjust and correct mine, making it much more practical. Dealer mechanics or salesmen may not always know what options are available - they only follow instructions they are given.