Re the DNS, I thought the front cover was a little wobbly...it came off too easily for my tastes.
Empty the cover is a little wobbly, but there are metal coil/spring type things on the back that provide pressure against the drives once they are installed and then there's enough positive pressure that there's no movement/wobble at all.
I am curious as to what the power supply to the DNS is like.
According to the DNS-323 Wiki:
(with two drives)
HDs spinning/powering up - up to 72 watts for 3 seconds
HDs up, high CPU, Gigabit network transfer via CIFS/SMB - 23-24 watts
HDs powered down (sleep), otherwise running - 7 watts
My power brick has the following writing on the bottom:
Jentec Technology Co, Ltd"
AC Input: 100-240Vac/1.2A
DC Output: +5V/3A, +12V/3A
According to Jentec's web site it's a "34-61 Watt Dual Output Switching Desktop Power Supply."
I've been running this unit for over a year now & it's been a solid performer. I bought this as something cheap to get me by till I could afford something better, but I've been really impressed. I'd definitely buy a second one to run alongside the first if I ever had the need.