My Fringe Binge is over. The series is complete.
Long story short: s1, s2, s3, stop.
s4 is an almost complete reset of the show up to that point
s5 is marginally better, but so many things just seemed to be not as well thought out as the rest of the show (& it's only 13 episodes). But things tend to become a complicated mess then you start involving time travel
Overall I enjoyed the show, one of the better Sci-fi shows I've sat through. I just wish it had better ratings and could have carried on the quality that was s2 & s3 into many more seasons going forward.
I really loved the theoretical sciencey nature of the show, definitely a nice change from the alien "invasion" of X-Files. But I still don't understand why there wasn't more of a technology, idea & crop (coffee bean) swap with the alternate universe. we could have gained super regeneration tech & powerful weapons, and they could have had coffee and helicopters.