[s0ke]

I agree that if near silence and power consumption are important to you.  O2 for sure.  I have a Noctua in mine as well as a very quiet disk and I barely hear it.  And it sits on my desk.  But they are a bit fragile compared to some of the other machines.  I miss my Ocante2 somewhat but I just couldn't take the noise anymore and the heat output.  But very happy with the O2 as I don't do much heavy lifting anymore with these machines anyway.