I would recommend at least 3 of your options. If I will choose it would be:

1. PrintrBot. Their printers are superb and they have incredible customer support. If you encounter some problems with your 3d printer (which I bet is rare, at least from my experience), they will entertain and address your problems immediately.

2. FFCP. This is another great printer with quality prints and runs quietly.

3. Wanhao i3. This is also a great printer but I've heard some issues with Wanhao USA. I hope whatever it is, the issue will be fixed though