H&R vs Eibach, which for 4kq?

[Wolff <quattro200@earthlink.net>]

I want to put new/other springs on my '86 4kq. It is sagging badly in
the back. It is not a snow car so I can lower it. (The 44's get the snow
duty). I already have Bilstein HD's up front and have matching struts
ready for the rear. I also have R-8's in 15x7 ready to go on as well.
Haven't chosen a tire yet, but don't need a thread on that. A lister
offered me some Eibach's used at an attractive price or I can buy new
H&R's. Opinions about stiffness, quality, progressiveness etc. welcome.
TIA,
Wolff