I have only heard great things about the 300 range, people said the hybrid, power and energy 300 are all very good. (Except the tacky speed 300)
But they are the opinions from relatively inexperience users, so I don't know if they are truly up to the golden standard. But that should be enough to indicate they are at least decent and nothing terrible.
I have no clue about the real difference between those 3 range either, that's the biggest reason that I haven't tried them myself. (Idk which one to pick!!)
I got the chance to try some 200 range and they weren't good, so...yeh if you are buying adidas gloves, stick to the 300.