Yep! Got my nicknames mixed up a bit. A buffalo and a bison is pretty much the same, isn't it?You mean Búfalo I think? Bisonte is Cobo, although his 2011 Vuelta would have counted for this for several years at least.
Iglinsky and Horner are great shouts too.
Let me also suggest Peter Velits' Vuelta podium in 2010. That time trial was crazy.
Wouldn't say Wiggins or Cunego fits here. Wiggins was consistently world class for a few years after his transformation except that weird 2010 where Team Sky seemingly rode clean, until he was hit by a permanent case of Geraint Thomas off-season syndrome. Cunego got lucky with low competition and suitable route in 2004, and I'd say he somewhat backed up his 2004 results for most of his career. Wouldn't think he did something exceptional doping-wise in 2004 specifically.