The following two come to mind if you want to experiment with C- and Ku- band:
CK-1 from SatelliteAV (or Sadoun) - it's Standard
BSC-621 Standard & 621-2 Universal, from any DMSI dealer.
Unless you want some particular Ku-bird that needs Universal, I wouldn't bother.
58° w comes to mind, but I don't think anything else over to 30° w does (which is also Standard).
I'm doin' good to see 58, and don't care, so Standards would be fine for me.
The dual band LNBF's seem okay on C-band, so if you like to play, ya might consider one.
Otherwise, there are a few attractive C-band-only LNBFs:
BSC-421 @ DMSI dealers
B1-stacked by Eagle Aspen @ Sadoun
C1 @ SatelliteAV
Think there was another one, possibly
Digiwave, but not sure.
I'm sure others will chime in with more choices.