I usually fly with more expo on my low rates like someone else mentioned earlier. I used to use much higher expo on high rates but since I have changed that feels way too mushy for me. I got the idea of using lower expo from a friend who talked to a pilot who flew a 3d demo at a fly in. The demo pilot explained that for 3d he felt much more locked in using no expo and wanted the plane to do exactly what he told it to. I may not have explained it as well as it was explained to me but you get the idea.