I did not originally want the etorque system due to the additional complexity and unknown durability, but found the truck I wanted at a killer price, but it had etorque. So I rolled the dice and got it. I have not seen it mentioned before, but the Etorque system has a factory 8 year, 100k mile warranty. So far, I am happy that I have it. Start/stop makes a significant difference with MPGs anytime you get into traffic or stuck at lights. If the AC would continue to cool with the engine off, I would never turn the start/stop off....got to have the AC on down here in hot, humid, sunny Florida. Once the cab is sufficiently cooled off, I use the start/stop. I am thoroughly impressed with how smooth the upshifts are during normal driving. I can hear the engine going through the gears, but the acceleration is absolutely constant. I have not driven any other new Ram so I can't comment on differences between Etorque or not. The only time you really notice something different is during braking. When you push the brakes, the first thing that happens is that the regenerative braking kicks on. As you continue to push the brake pedal further, the regular brake system adds the additional braking power while the regenerative braking continues. Unfortunately, the regenerative braking force is not dynamic, meaning it does not change with the brake pedal position. It is either on or off, like a switch. Barely push the brakes, it turns on, let off the brakes just a touch, it turns off. There is no in-between. The braking force from the regen braking is very small, does not slow you down quickly, and is smooth, but it does require some adjustments to how you drive. I probably coast farther and brake later now. The other bit that took some getting use to was light braking when coming to a stop. Lets say you are approaching a red light and barely push the brake pedal to slowly come to a stop from, say, 40 MPH. When you barely push the pedal, you feel the regen braking kick on (standard hydraulic brakes not contributing) and the truck gradually slows. The RPMs drop and the trans downshifts through the gears using the regen braking to its full potential. When the rpms drop below a certain threshold in 2nd gear, the regen braking kicks off and suddenly you are not braking anymore since you were not using the standard hydraulic brake system. Initially, this is unexpected and can cause some less than smooth braking as you suddenly hit the brakes harder to compensate. After a while, you learn how the system acts and adapt your driving accordingly so that your braking is now smooth. Please keep in mind that this is all a very small perception. Some people may not even notice any of it. I am an engineer and a driving enthusiast so I like knowing how things work, why they work the way they do, and being in total control of what my vehicle is doing.....when possible.
In short, there are things that I like about the Etorque system but it does require you to brake slightly differently compared to a non-etorque system. (every vehicle requires different inputs to drive them smoothly) Personally, I would not have paid for it if I had my truck built to my specs due to the increased complexity and potential for trouble, unless someone had shown (data) a significant advantage; however, I got a great deal on a truck that had it and I do not regret it. 8yr/100k warranty on the system provides peace of mind as well.