So I promised a review of the American Vintage reed from MARCA. So I´ll try to put some words into writing now.
I´ve found that French file reeds suits me best (on all saxes except tenor), therefore it´s hard for me to really give the reed justice. However, for my tenorsax playing the reed worked really well. It produces a thick sound with a clear attack and, for me, it lasts longer than my French file reeds. I´ve been playing the Jazz reed by MARCA for many years now, and I find it to be the best one for me on alto and soprano. It has a quick response, clear attack and it is very easy to change the timbre to your liking.
So that´s my take on them. Try them and I´m sure you will like them.