The BJCP guidelines have commercial examples of every style:
http://www.bjcp.org/2008styles/style19.php
Commercial Examples: Thomas Hardys Ale, Burton Bridge Thomas Sykes Old Ale, J.W. Lees Vintage Harvest Ale, Robinsons Old Tom, Fullers Golden Pride, AleSmith Old Numbskull, Youngs Old Nick (unusual in its 7.2% ABV), Whitbread Gold Label, Old Dominion Millenium, North Coast Old Stock Ale (when aged), Weyerbacher Blithering Idiot
I don't know which ones are good, but that might get you pointed in the right direction. It is interesting that it says North Coast Old Stock Ale is an English barleywine after it has been aged. What is it before it is aged?