Ever try and program an old school version of the BL3500 without a BL1000? Yeah, good luck with that.
I like mine and keep it on my desk. Works like a champ. Easy to take apart and clean, too.
Worst B&O product I've ever had is that stupid keychain. Every couple of years I pull it out and use it for a week and then go "oh yeah, now I remember" and toss it back in the drawer.