Surely the prime objective in a XWind landing is to have the beast tracking parallel with the centreline at touchdown. If this is not achieved there is a sporting chance that momentum will overcome tyre grip leading to the need to call out the greenkeeper (and the guys to replace some R/W edge lights etc etc). To actually be on the centreline is a bonus.
Having operated four types, alternating between de-crabbing and side slip, I would say de-crabbing is easier to learn but more likely to result in not achieving that prime objective when you get caught by a gust at just the wrong moment.
My preferred technique is to ease in the rudder around 300ft enough to remove about two thirds of drift. Reducing Xwind component as you get nearer the ground usually results in being pretty much aligned by the time you get to the flare, and if circumstances permit you can finesse the rudder at that time.
Reduced sideslip on short finals means more control authority in reserve from ailerons/spoilers.