Barristers Reserve Cool is stronger than Epsilon Blue, too. Also, while they smell very similar in the bottle, they are different after dry down. Reserve stays the same as when wet, while Epsilon Blue drys down to a more aquatic and powdery scent, which is how some have described Floid Blue. I would say Epsilon has a bit more longevity. As for performance, Reserve has more menthol cooling effect, but I like the skin feel of Epsilon better. Reserve has more oil that will actually sit on top when it has been sitting. You really need to shake it up before using. Epsilon is lighter and cleaner feeling. The after shave skin feel from Epsilon reminds me of Floid Vigoroso, which is the only Floid I have used and my guess is that all Floid products have similar performance. My skin feels very soft and smooth, and a little bit moisturized after using it. I am impressed. Hopefully someday I can score some Floid Blue to compare, but if not, this will do.
+1 to all said. Completely concur with this great description of the B&M Cool and the Epsilon.
The B&M Cool is the most advanced, complex scent I have ever smelled. Love it.