Synology is probably the best brand. I have had decent performance from a Buffalo NAS housing a pair of WD Red 6TB drives(not running in RAID, just JBOD). If you have plenty of RAM(32GB or more) and assign 5-6GB to Disk Cache(Playback Engine>Disk Playback>Cache size), and allow the session to fully cache before playback, it should be okay within reason(not sure how that would be with 200 tracks
)). If you don't use RAID, you still need a backup strategy.