Matt Keenan during the 2009 Vuelta:
"And as you know, the Spanish riders tend to be very good at descending. Well, some of them... if it's one of the two Sánchezes. Other than them, it's... variable".
Marty McDonald covering the 2010 Tour of Turkey solo was probably the best Anglophone commentator I can recall hearing. Keenan might be good if he had an analyst but his commentating solo drives me mad; Harmon has plenty of knowledge but a tendency to be too biased (2011, despite providing approximately 2 good WT stage races - Suisse and Tirreno-Adriatico, and despite hilly Classics being a bore, was apparently the greatest year of cycling in memory, probably because Evans, Gilbert and British people won lots). He makes a fair few mistakes but is usually prepared to correct himself. Phil and Paul don't even know they're making mistakes. Issoisso will be able to tell you about the legend that is Paulo Martins, a man who will make you pine for Liggett, however.
I once pointed out Phil Liggett has forgotten more than we could ever know about cycling. Unfortunately he only knew as much as we could ever know to begin with.