Does anyone know of a post or website that provides a value comparison? 

As I'm a relative bitcoin newbie, I'm curious from a cost/investment return/rate of return/risk perspective.  I've already invested in some fpga hardware that's at ~ $1/MH but the rate of return is something like 8 months given the energy costs (I haven't done the math to map it to Joule or W per MH, but it should be low at 28 W/per board).  The only positive I see with fpga(s) is that the risk is lower because they can be somewhat repurposed or resold.  With ASICS, depending on what you purchase the value may be better (not really with the USB Eruptor) but the risk is higher because they can't be repurposed if Bitcoins go bust.  I guess that risk might also apply to cloud mining or buying shares, but I've read somewhere that the rate of return could be something like 1 year which makes it even more risky.

Fluffy