Having grown a number of pulchella forms for a few years now I have found quite a different in growth levels.
Fastest for me is the Akopan which is really vigorous.
Slowest is Amuri which stopped growing two months ago and prior to that was growing at a snails pace.
Inbetween is my Chimanta form which took ages to get going but now it is starting to clump has finally speeded up some what. And my Angasima form looks like it will be the second fastest (though only been growing for a few months so far).

Anyone else found these differences?