Another option as far as plecco choices...
I just bought 5 L104 Panaque Maccus for my 55 gal.
They're small, eat driftwood, and while similar to the Clown Plecco, they're a bit different.
I got them from "DGA" over on AquaBid. He's got a decent selection of the oddball stuff and his facilities are awesome! (he is local to me!)
PEACE!
-TF