Originally, I had the "classic" 90mm f/8 Super Angulon, but had trouble focusing it in anything but strong sunlight due to the aperture. I went to the later 5.6 version Super Angulon XL, and was happier. They are, however, rather large and bulky for that focal length.
Then, along came the Super Symmar XL. I bought the 110mm length early on, and have only used my 90mm a couple of times since. The design is far more compact, has lots of coverage, and it's very sharp. The Super Symmars are, however, a bit pricey by comparison, but well worth the extra expense, I think. I haven't tried the 80mm SS XL, but it looks tempting.