I definetly do not miss the old bucket lugging thing. I forgot whats its called... A cobra or python, but that thing is great I hook it up to my sink and it has a 50ft hose that reaches all my tanks. It suck the water out and then you flip it around and it put the water back in.... Best 35 bucks I ever spent!
What do you do about the water conditioner since the water comes straight from the sink? And what about temperature? Those are the two aspects that have kept me from trying to find another way of doing it. With the buckets I have control over the temperature and put the water conditioner in the bucket before adding the water to the tank.