See above... ;D
Can't say for "smoother", but the faster part is true enough.
Been swapping out factory shifters in transmissions since '65. Almost no factory manual shifter was left unmolested in a street car.
Only after I got into trucks did I start to leave them alone for paying attention to so many other things.
Even though quick-shifters have been around for some of the swap-trannies we use, it wasn't until the Gear-Banger came out though, that attitude changed again!
Paul