Filters you will get endless suggestions and there's probably no right answer so maybe your question is more at making water changes more simple?
If you want an easy to use filter that doesn't require heavy lifting to keep on top of then the Fluval G series are worth a look at, I'm not just saying this as I have one for sale, the pre filter is really easy to lift out and keep on top of meaning you don't have to lift out the main filter very often, how often depends on load. (They aren't a cheap filter and have their flaws but I wouldn't be without them though)
http://www.fluval-g.com/features_e.php
With regards to the water change they can be made nice and easy without the need for buckets as
@rubadudbdub says.
I tried the python and it just didn't work for me, probably down to water pressure and our taps generally don't lend themselves to the fittings in the UK either.
How about a simple siphon on a long hose and so long as the other end of the hose is lower then it could be as long as you like, simple fitting can make this easy.
You could even put a tee with a valve inline of your filter intake that you just connect a hose to but then you would need to vacuum the aquarium separately.
As for refill time I just use TMV or Thermostatic Mixing Valve which you can get fitted easily anywhere you have a sink or hot/cold pipes. This you can then dial in to the correct temperature, connect a hose and take that hose to the aquarium to fill it back up. If you have any questions about this drop me a message as this isn't the best explanation.