I normally ski A2 34mph but after reading JMac's post I was having a pretty good set last week so I tried some changes, last 4 passes at 22 off were, A2, A3, B2 & C2, can't say I noticed a massive difference but did find A2 easiest.
Last month I tried C1 and although 22 was easy I couldn't run 28 with it but had no problems when I went back to A2.