My vote is for automationreview.com. In this domain you can discuss about Automation engineer and Automation weekly news. ALL THE BEST!!!
I like AutomationEngineer.org, but I heard .org is not good for SEO(?) so I'd say AutomationReview.com.
automationreview is ok......................but you can use industrialautomationreviews or automationreviews.............
It is not so much about the domain name, it's about the quality of the content on the site. Go with whichever you want but remember it's all about quality content, not domain names. Ps, my vote goes for AutomationWeekly.com
If it's about Industrial Automation and PLC, DO NOT use anything else - this is the BEST spot for your SEO keywords. All these would be good: IndustrialAutomationPLC.com Industrial-Automation-PLC.com IndustrialAutomation-PLC.com Just my advice from an experienced SEO buff ... and don't use anything else but dot-com for your TLD.
FYI, might not be smart to post domains you are interested in on a public forum; someone might decide they like it and register it before you get a chance to!
I think AutomationWeekly.com is best. In a site that posts content at least weekly, you can then talk about reviews and engineers.