That depends...

If you have SampleTank 3 installed and SampleTank3 has moved all SampleTank2 instruments into its legacy folder. you could erase SampleTank2.x from your harddisk to free a lot of disk space.

Some of the MIDI SuperTracks have SampleTank2.5 hardcoded as a plugin. These you can't access then. Dr. Peter Gannon has stated in another thread that you would have to edit that style to automatically use SampleTank3.

If you play Hi-Q instruments, direct BIAB/RB to the new SampleTank3 instrument.


Desktop; i7-2600k, 8 GB mem., Win 10 Pro, BIAB 2017; RB 2017 - latest build
Laptop: i5-2410M, 4 GB mem, Win 10 Pro, BIAB 2017; RB 2017 - latest build