It's encouraging that the people that use Thirtyseven4 have had good results and like the product. On the other hand, I've tried to google additional reviews and haven't come up with much. When I check av-test and av-comparatives, I don't see Thirtyseven4 included, and wonder why. (Edit: I found on the ThirtySeven4 website that Thirtyseven4 uses Quickheal Technology software and that IS included in tests at least at av-comparatives.org)
I haven't checked the cost, but it sounds like it might be a bargain compared with other AV solutions, which is always a plus. We're currently using Sophos, which has worked well for many years, but doesn't seem to appear at the top of the recent av-test and av-comparatives reports.
So, some pros, some cons, not sure how to make the best decision on this one when my Sophos subscription runs out.