I'd have to recommend Fluval G6.
I came from a Pro II (forget what eheim # that is) and the Fluval G series is just so much easier to maintain. It's also very attractive and my G3 is quieter than my Pro II was.
Don't get me wrong, Eheim's are awesome - so if you decided on them, make sure the Eheim's tubing size is correct for the largest ADA lily pipe (assuming you're going to use that?) as I think the pipes only go to 5/8" while some of those Eheim's have 3/4" tubing.