I will only go 10- or 11-speed when 8 & 9 are GONE. (But then, I ride MTB) As far as 'quality' goes, well, I don't buy Shimano drivetrain parts.
My world would be perfect if SRAM made X.9 shifters in 8-speed; other than that, I'm good where I am. In fact, since my X.9's are 9-speed, they're taking next year off -- I'm "retrofitting" my Kona with the 8-speed system I installed on my daughter's "Sweet 16" bike, SRAM X.4 shifters, which will work with my newer X.7 derailleur. I'm a little tired of breaking 9-speed chains.
Maybe by the time 8 & 9 are gone, I'll be old enough that I won't put so much stress on the drivetrain; BUT, by then, I'll likely be on the IGH Electra......