The last version I used was 6, then I switched to other audio editors,
currently I'm using Edison in FL Studio and Ocenaudio (which also supports VST)
https://www.ocenaudio.com/
but it wasn't a rare thing that I used Reaper as audio editor too while recording stuff.
Flac is really a must have file format nowadays. It saved me gigabytes and gigabytes of space on hdd's and not only on my PC but on Google Drive as well.
When Image-Line added support for flac in FL Studio it was a gigantic relief.