What elite, prime fights were fought at the highest level by both fighters?

[tusc1976]

You think Arguello was prime at 140?

Why Not? At 30 years old and 5'10 why wouldn't he be in his prime? Both were very competitive in that bout. Arguello's only loss at jr welter was with Pryor...not because alexis was passed his prime(and certainly wasn't washed up) but because pryor was a beast! Pryor wouldv'e been trouble for any elite fighter in their prime at 140...which is why he was the most feared and avoided fighter at that weight. Arguello vs Pryor has to be one of the top ten greatest title fights of all time...easily!
Real question is...was he still in his prime AFTER the first pryor match?