Used up to 1.5 then switched to 2.0...Just tried 1.8 and I've got to say, I'm surprised.
I notice a sweetness for the first time and a oats type of aftertaste.
I just used the first bag up this morning...Took a few days, going slow.
I did a 7 bag trial and I'm gonna up it and slowly increase my intake...
So far I like it better than 2.0 in the way it keeps me fuller for a longer time. Can't beat the easiness of 2.0 though.