Since we are in the beginners forum, I'm going to answer with that in mind. For new pilots that are learning, or are still pretty fresh from their solo or second plane, I feel that they can use low/high rates be shy away from expo on their planes. I feel that the pilot needs to get experience on flying the plane without all the "gadgets" first. If they need to make it less sensitive on a control then I will recommend that they use low/high rates to adjust the sensitivity of that control, and not use the expo for that. You have to remember that what somebody learns while they are training will have more impact on their flying for the rest of their life than anything else. Heck, I've been flying for 9 years now and I still have a couple of bad habits that I learned while training and can't seem to get rid of. Expo is a setting that really requires some good working knowledge of the plane and how to fly it to be set up properly. IMHO new pilots shouldn't worry about using expo until they get some experience under their belt. Plus, new pilots have enough to worry about than trying to decide if their expo curve is good or not. Concentrate on sharpening your piloting skills now and worry about expo down the road.

That's my 2° worth

Ken