When it comes to ASIC miners. What would be your preference?

Would you prefer to spend your money on a standalone network device?

Would you prefer to spend your money on a PCI-E device to directly replace your GPU's?

Would you prefer to spend your money on a USB device requiring external power?

Myself, I can't quite decide between PCI-E or Standalone. I suppose as a standalone device it would be dedicated and as such could be located wherever I please, online all the time out of the way. A PCI-E card has the benefit of being able to sit in your main household PC's or directly fit in to any custom ATX chassis you've loaded into your garage.

A usb one... well I don't know, if it looks good on your desktop and can be carted around with your laptop if that's your only online option then it makes sense.

What are your views?