I feel so strongly about the two albums below that anything I say will sound ridiculous, so I'll just say that they are currently my favorite electronic albums.
1) Gridlock - Formless.
Its got the avant-garde factor, but not at the expense of beauty and/or melody. Too many IDM type albums seem to intentionally jettison anything resembling melody, and it doesn't always work.
2) Kashiwa Daisuke - Program Music 1
Pretty much the same deal, very beautiful. This one fuses elements together much like the Justice self-titled album, but in a far more mature manner, imho.
I really dont know what category this falls into though. Parts are ambient, and parts are not.
I'm not great with the categorization, but I'd put it in either 'ambient industrial' or IDM I think. For me, "electronic" is pretty much the limit of mental categorization that takes place. I tend to put Nine Inch Nails in the same group as Knife, KMFDM, Autechre, etc.
I don't fare very well with ultra repetitive material, so anything that gives some approximation of changes, or song structure gets my preference in the genre.
Ultimately my favorite 'electronic' albums dont seem to be firmly in one camp, but incorporate everything into one entity.
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I finally ordered some more Kashiwa Daisuke the other day, looking forward to comparing it to the impossibly high bar of Program Music 1.