I considered the Cube but ended up buying my panel from Electric Brewing Supply who makes Spike's controllers (in Michigan!) I immediately swapped out the PID for an EZBoil. I accidentally ordered the DSPR120 instead of the DSPR320 but I'm very happy with the combo. I really wanted a wall mountable panel so that was a major factor in my decision at the time. I also considered building a panel and I'd have seriously considered the Brewcommander but it came out a few weeks too late.
Practical considerations, the Auber with the particular model of EZ Boil it uses offers some significant benefits for programing some automation. The EZ Boil is not a true PID but uses a an algorithm that works quite well where the Spike controller is a PID and therefore requires an autotune cycle which you likely only have to do once so not a huge consideration. If you won't use the programmable features it pretty much comes down to using the knob or buttons.
2 years in, a reason I'd recommend against the Cube is that it doesn't offer a a switch that turns off the element which in my mine is a significant drawback. I'm now in the habit now of turning off element power as I've dry fired the element due to being in mash mode and turning on the panel to power up the pump to CIP a conical.
That pic from Spike's web site is not a production model. The output side is a female connector.