It is extremely helpful in programming mode. All said the Yamaha CD-C600 has some nice features such as Random mode, Disc Scan which scans beginning of all CDs, Play Memory Mode, which resumes your last track played and an Auto Standby feature. I think The Yamaha CD-C600 is a very good unit that should merit serious consideration.
https://www.amazon.com/Yamaha-CD-C600BL-5-Disc-Changer-Black/dp/B002NKM4C2