I replaced the original tremolo bridge of my Fender Vintera 70s Stratocaster with this ABM bridge as reviews on Thomann were mainly very positive.
However, before I made the switch, I did record the guitar to be able to make a before and after comparison in terms of the sound.
My experience is that overall the original Fender tremolo is as good as the ABM one with the exception that the tremolo bar implementation on the ABM is a much more pleasant experience than the Fender bar.
In terms of the sound, three others and myself could hardly hear any major differences between the recordings of the ABM and Fender tremolo bridges / saddles.
I also found that the tuning stability is almost identical between the two, so no real advantage here either.
In conclusion I am keeping the ABM bridge, but if I would have known what I know now I would not have made the change as for me the only real improvement is the way ABM designed the tremolo bar fixation.