Ahh-haa, but hang on there - are you talking about completely automated, or only specifically monitored with precision equipment?
I can also get fancy gear which monitors my system, the system in it's entriety still remains a simplistic setup. If I had the monitoring system in place, I would still be doing the manual work in dosing and filtration methodologhy, only that I would always be right on the mark in that the "system" will be telling me exactly what dosing is required because of up to the minute monitoring - which I can be pretty sure is not the case with most reefers.
After saying that though:
I understand 100% what you are saying about the better tanks being on automated systems, however, many of the systems you speak of - are they regular people or are they people with abnormal financial assistance? The average Joe, non-company owner - just regular income earner, could not afford such sophisticated systems without the aid of an additional or supplimented income - or without an above average salary really speaking.
So for the "average Joe", simpler may very well be better.
For those with very deep pockets, hi-tech may be better.
Which is ACTUALLY better, is dependant on the size of the pocket now isn't it?