You asked what we are using for drum replacement.
I think most do as Mike say's and use Audio snap, get your settings just right so it's only shows the snare transients, and then copy to a midi track.
It is a little fussy to use at first so read the help and tutorials as you go. If I go a couple of months without using it I always have to bone up on it again.
Once you have a MIDI track then it's a ( not so ) simple matter of picking the snare drum sound you want. Like I said, you can even sample the original snare. I use TTS-1 kick that I modified a bit, for example, and for snares I'll dig around in the Session drummer library. There are endless sample available , most are free. This is what take the time is auditioning sounds. But once you've gone through the process you'll never look back.
I tried tool copy into wave lab which is pretty easy to mess around and get rid of noise, but in the end, the sound was not right. The replacement sounded much better.
Note, this works best for solid transients. It won't work as well on things like a jazz snare played with brushes. Or with ghost notes.
This is where mixing the 2 tracks might be necessary.