$hit bro, did I tell you I expertly sell reliable used cars for a somewhat great price on Tuesdays too? Honestly, I worship your literal alley mechanic skills.
Anywayz
You know it all depends on what you want to spend Life
The FE3s ( from 04-05 ) are still available and are a good strut. They might be listed under GXPs to.
I did have a problem with the rears on SSCs and went to Bilstein rears.
They (FE3) are reasonably priced for a better strut.
I am no expert just a guy who has read a metric $hit ton of reviews. I new what I wanted and bought it after research.
The CompG I have had FE3s stock before I bought new ones for the SSC lowering springs I bought. I knew what to relatively expect.
The ride ain't no fckin Lincoln or Caddi but it rides tight and my roads are not all that bad, snow or not.
If you are going stock springs just buy the ExcelGs, they do have a fairly good rep. If you are lowering, honestly then it is pretty much a crap shoot on W-bodys.
Hope that helps a little since most guys that like to talk strut damping and progressive/linear spring rates are driving more important vehicles now....geesh