@rlb61 If you already own them and have used them for years there’s no reason to change. They’ve already delivered their value to you and will continue to do so, but in terms of new purchases I think they’ve been dethroned as the best buy.
I tried to make my reasoning clear in my blog post but here is the summary:
- They are no longer the only one’s relying on series mode protection. Furman with SMP has it too and it's very good. TrippLite has some models which seem to perform as well but I'm not 100% sure if it's series mode or not.
- Zero/Brickwall no longer test as well as other units in terms of let-through voltage. The legendary low let through and low response times they gained fame for have been bested. See the Wirecutter article I link to.
- For the price they lack features we may want which Furman has, things like switched outlets, built in voltage regulation, active noise filtering, power factor correction, etc..
Of course ZeroSurge, Furman and TrippLite offer many different models but a straight up comparison between a ZeroSurge and a Furman with SMP and Lift makes the Furman a better buy.