ECS and PC-Chips are the same company. ECS is the retail outlet, while the all-in-one stuff mostly gets marketed to OEMs.
Depending on where you buy them, you'll get BIOS and drivers only (PC-Chips) or real end user support (ECS).
The boards are OK, no nonsense or overclocking features on them though. They're built to get the job done, not to be played with.
btw, PC-Chips/ECS group is like the fifth largest mainboard maker out there. Don't you think they wouldn't be as big if it were all crap?
Sure, they feed the low end of the market, but especially this is a high volume market where you better not have any design inherent problems in your hardware ...
Most people who curse about PC-Chips gear here simply fail in setting up those all-in-ones correctly - that's the difficult part.
Regards, Peter