They have had the type A's for ages as far as I know (neo RB25 engines). I tossed up between Type A's and B's around 7 years ago but was talked into type B's as I was assured there would be no losses down low just a fatter mid range. In hindsight, assuming I was going to install cams, I would choose the type A's to get the extra lift without the extra duration.
As I stated before the type B's have the slightest lump at idle but it is very slight and hardly worth mentioning.
For the OP, Dan has forgotten more than I will ever know so listen to what he is saying.