Just a quickie that Steve Kenson just pointed out.
You can certainly take the Limit: Source or Limit: Removable on a power that comes from a device, but the trade-off is that you no longer get Trouble from losing it.
The advantage to an item labeled as a Device is that you can generate Determination with it. Even if your Trained hero is an antisocial loner with no Qualities whatsoever, you can create determination just by having the Lonercycle stolen or the Lonerlasso broker. If the Lonercycle or the Lonerlasso is given with the Limit Source, you can't do that. You probably have more Determination because you used the limit to offset the Determination loss, but it is a trade-off, and you do have to consider it.