If anyone has been curious about these they all taste exactly like regular Hellmann's.
My Best Foods loving SO always keeps a small jar in the fridge, so I was able to do side by side comparisons. No difference. Nada.
Roberto, who you might guess from the name is Latino, gave the Best Foods mayo with the lime a taste and said ... "Limon? ... Noooooo". Didn't taste any different to him.
The thing is that regular Hellmann's has lemon juice in it, so substituting lime for lemon isn't going to make a great deal of difference.
Never realized before how salty Best Foods mayo is ... that was the flavor that dominated ... salt.