I have been very happy with my eheim 2227 wet dry,
I have had one on my 40 gal tank for about 5 months or so.
I had a small cat fish get caught in the intake (the sponge came off, i have a guard on it now) and it caught in the line, when i broke it down to get the catfish out it did not need cleaning, after about 3 months of use.
I am not sure of how many GPH it is but it is rated for a 75 gal tank.
It does not siphon, but once you get it set up it has a quick connect with a valve so you will not have to restart the siphon, ( i shut it off at least once a week to change water, i never have to restart siphon)
it is also very quiet, It is about 8 ft away right now and i can not hear it at all.
I have no idea about energy consumption
the only bad thing about the filter so far is that when it was shipped, the impeller shaft shook loose of its 2 rubber spacing grommets, so it made a LOUD buzzing noise until it figured out what the problem was. It took me about 3 hours of tinkering until figured out that the spacers has come off, i just slipped them back on and it has worked like a dream ever since.
my 2 cents
PS there are some people who will try and sell you filters and other equipment on this sight (I posted a thread similar to this one before i bought the ehim)
I do not sell eheim or any other type of products related to the aquarium hobby.
