Thanks for reaching out with this beekeeping question! Different honey bee feeders have different pros and cons. 

When temperatures are cool and/or the colony is small, I think it's easiest for bees to access syrup from a gravity/bucket feeder that is directly over the cluster. Just make sure that it doesn't leak! A gravity/bucket feeder over the cluster is usually the best option for feeding a package colony, especially one that his hived on foundation without stored food.

I like using frame feeders for feeding established colonies. We keep a frame feeder in most hives year-round, which makes it easy to feed colonies when they aren't supered. Healthy, strong colonies can often access and empty frame feeders quickly as long as the temperatures are warm enough for them to move around the hive. Keeping the frame feeders in hives year-round also means that we don't usually need to clean or store these feeders. We use frame feeders with the cap-and-ladder design, which seems to greatly reduce the number of bees that drown in syrup.

I like to use top feeders especially in the fall when I want to get a lot of feed stored in a hive quickly, because the style I have holds 4 gallons. It's convenient for us to be able to feed strong colonies 4 gallons at once, especially to reduce the number of trips made to feed bees and the number of times opening hives in the fall. I also like using top feeders to feed our single-deep colonies going into winter, especially since I usually don't want to remove a frame from a single deep colony to place a frame feeder.

Happy beekeeping!