Do you use a modded or stock iPod? Why?

I just snatched up a never used iPod Classic 7th with 120gb, without a single scratch on the back. It’s pristine.

But now I’m wondering, should I mod it or run it stock? Stock keeps it in mint condition without my 10 thumbs breaking or messing something up, but modded opens up for a plethora of stuff for this device.

I’d love to get Bluetooth on it somehow, mainly for audiobooks, but the all metal case would be an issue there.