When I moved to South Florida close to 8 years ago, I purchased a few Furman M-8x units for my network rack, computers and AV equipment. I’ve been through multiple storms, a few major hurricanes and plenty of electrical storms without any problem. I don’t have surge protection for the whole house and as a result, a condenser inside the AC got damaged during a small storm, but nothing that was protected by the Furman units had any issues, the Furman just switched off power a few times during the storm. These are the only units I ever used for surge protection, and I don’t know how they compare with other units.