Perhaps my experience or usage of the browser was different from most, but I would not characterize my experience with Firefox pre-Quantum as "slow and buggy".

Perhaps my experience or usage of the browser was different from most, but I would not characterize my experience with Firefox pre-Quantum as "slow and buggy". I rarely noticed bugs and it always seemed to be as fast as Chrome was. Granted, I did have ad-blockers installed and I never ran benchmarks but I never noticed much of a difference.