probably a better comparision would be with exr5 / exr7.
also in exr series, the 76 keys instrument had a slightly better action and feel. i don t know about size though. the 61 keys instrument's action was better suited for fast solos, but feeling too much plastic and cheap.
my oppinion....
anyway, to me, e60 is a exr7 type of keyboard (build, keys, etc) but with (hopefully as close as) G70 sounds and functions. so, i'd say not bad for the price!