I don't know about the Eibachs, but I loved my B&G's as well when I had them.
Stiffened the car a bit, but not enough to make driving uncomfortable.
Actually, it's funny because I had them installed without letting my parents know. They didn't even notice a difference in ride quality. (and trust me, they tend to notice things like that. They absolutely despise my coilovers right now. Haha)
When I replaced my springs with coilovers, my parents actually thought the B&G's were stock springs and yelled at me for "replacing such beautiful stock springs for ugly coilovers!" XD)
Starting to miss them actually. Haha