Request an option to have ADS Traffic display altitude in difference between me and them, to the nearest 100', erring toward worst case. (That is, if they are 370' above me, then display +300.) Two reasons: 1) It takes time to do the math in one's head when raw altitude is displayed. 2) Even tho I might plan to fly 8500', the way it is in Arizona in the summer, I tend to drift up and down 500' in block fashion. So if I see traffic at 8800', I might think "I'm okay, I'm cruising at 8500', when instead, I've drifted up. (Into the traffic.)