That there are important differences in the default configs between One and Free. One basically writes a snapshot of the running system onto the hard drive. So whatever defaults One comes with will persist once installed.

It can all be straightened out though, do it all the time.

The question is do you want the system quick (One) or better configured, less work afterward (Free)

Do check out Slax. I've never had so much fun with an OS.

I set up a reporter once with a 2 GB USB and mini CD. All her configurations were a click away, for writing something up, editing images, uploading to the office...

All she had to do is convince anyone nearby to let her boot their laptop, she'd boot with a system that won't touch their hard drive. (bribes involved)

So much power in your shirt pocket. Amazing. Thomas M. is genius.