Buy a current bottle, open them both, then report back here your impressions. How's that for a tip?
There are lots of Blanton's listed in Jim Murray's Whiskey Bible, scoring from 79 to 93. Not sure of the difference between: (Gold Edition, Silver Edition, Single Barrel, Special Reserve, Straight From The Barrel, and Original), no years listed, just different ABV's, but almost all are highly rated. It's one I have yet to get around to purchasing...soon.
Also, there is one listed here in the "Whiskies of the World" section, a 49.5% abv rated 7 3/4 by Michael Jackson and 9 1/4 by Martine Nouet.