I run an Alfine these are my thoughts so far
PROS – runs through all weather with consistent gear changes, easy to set up, stealthy (runs very quiet), awesome on days rides, cruising around on bridleways, forest trails and the odd singletrack. The bolted rear makes the back stiff.
CONS – heavy rear wheel is noticeable, changing gear underload isn’t great which in turn lends it not to be that great for undulating singletrack where quick gear changes are needed.
I like it but on the right type of ride which is all day riding as mentioned above, very muddy or nasty weather conditions.