At the risk of lowering the tone amid all those famous makes, I previously owned a Stella which played well but needed fingers like mole grips to hold down a chord. I found a second hand Washbourn Cutaway 12 string about ten years ago and have never wanted anything else. It holds its tune and has a low very playable action and the built in electrics give a wide range of sound effects. Its also the easiest 12 string to tune that I have ever handled.
A very good instrument and well worth considering if your looking for a decent 12 string.