The Eros gives more body to the instruments, it extends both ends of the spectrum and, most important to me, it fleshes out the soundstage extending it further back and wider.
The Seduction is a very good phono stage. It is a heck of a buy for the cash. The Eros is trickle down technology from Bottlehead's multi-thousand dollar custom phono stage.
So if the Eros doesn't stretch your budget go for it. It is just that simple.