I've been using TunesGo since 2016 I've been using TunesGo from Wondershare to move music across devices since 2016... It's done everything I've wanted each time I use it. I've had no issue pulling music from old to new devices over the years (much of my music was ripped from old CD's, not purchased thru iTunes, so iTunes backups don't work). I've only had to contact their help desk once - turned out I just needed to install the latest version of the software to resolve my issue.

TunesGo does not work TunesGo does not work! It only recognizes my iPod when iTunes is open. TunesGo tells you to close iTurnes and when I close iTunes TunesGo stop recognizing my iPod.