I hate digital trims. The old mechanical ones where you just went "there" and they were set were much better IMHO.
I use trims a lot and the constant beeping and squawking frightens the bejesus out of the other pilots on theflightline.Mixing's OK though. I bought the T7CAH set because I needed multiple servos for elevator and aileron and it's the easiest way to achieve it without making myself a microprocessor mixing board.
End point adjustment makes for precise throw adjustment and throttle set up. Without it, setting up the idle of most of my engines would have given Ackerman a heart attack.