Solution surge only = little protection
Solution surge with energy management system = much better protection. Low voltage cut out is too low for my tastes. It leaves you to your own devices for power making generator ownership pretty much necessary
Solution autoformer to boost low voltage (which causes MOST of the problems) = good protection, particularly if some surge protection is added. Low voltage is boosted up to a safe level.
Solution autoformer conjoined to a ems. The best of both worlds.
Since I have a beer budget, and can't afford to replace expensive items I chose the Sola Basic autoformer to which I have added surge protection. I do check the pedestal each and every time under load, before I plug in.