I always ferment to dry in the bucket. Just know to snap the lid down with airlock at about 1.020 to keep the C02 trapped under the lid to blanket the wine from 02. Also be careful about what fining agents are used as far as sediment goes because some fining agents require the sediment to be raked over as they need this sediment to attract the rest of the sediment for clearing purposes. If this is the case just stir it back up a little before racking to carboy. I find letting it finish in primary goves it much more of a chance to actually finish fermenting due to not racking and leaving behind too much viable yeast thus making th little bit left struggle to do their job which can aslo stress out that yeast causing off flavors and also H2S problems.