I have taken Folidrone for over 2.5 years stratight except for a 2 bottle run of Ep1logue a little while back. I am glad to be back on Folidrone. Ep1logue was pretty good for about a month and then seemed to die off. It came out of the gait hard - with vaso6 being new to me and since I was already saturated with epi. It ended up that my system got used to vaso6 (which seems to be the big part of Ep1logue) and Ep1logue simply did not work that well after that. I have since got SNS vaso6 and, for me, dosing it everyday for weeks on end results in less and less of an effect (same as I got with Ep1logue). Vaso6 works better, for me, dosed a couple of days a week.
imo, Folidrone really shines as far as endurance goes, but it's also better for recovery, strength, overall physical support and mental well being and it gets better and better (yes, even after 2.5 years) and I am not the only one that says this. However, allot of folks like on AM like Ep1logue. You cannot go wrong with running either for a couple of months, but for a longer run - I would definitely go with Folidrone. Add Vector and you have the best natural stack available imo.