Well, it's not exactly heavy iron, but in the light-to-moderate-iron Dash-8 both methods work fine. I usually crab down final and kick it out in the flare, but with a very strong and / or gusty crosswind (especially on a short runway) I tend transition to the slip a lot earlier on final. With it's high wing the Dash can take quite a bit of wing down on landing, and with a touch of differential power when the crosswind component gets above 25-30 knots it handles very nicely (6.0 Richter scale touchdowns notwithstanding).