Pure sine wave inverter suggestions?

Lwiddis wrote:
Too risky to use a MSW on electronic equipment.

What kind of equipment you have in mind?
So once again, 20 years of using inverters in RVs and modified wave was never an issue. That include electronic controls on microwave ovens, AC, toaster, laptops, cellphones.
Did not use mentioned electric blankets, so maybe I luckied here.
Right now I have 2 inverters to choose in my latest project.
The pure sine inverter sounds good, but the cheap model I bought is rated for 6000 W peak, yet I measured internal wiring and included 2' supply cable to be #8 gauge.
So I am on the fence of using proven modified or newer gizmo with unknown reliability.
Since I updated system to solar panel, where inverter might bo on for whole day, I am trying to determinate wchich one brings better efficiency aka better bang for a dollar.
Not surprisingly such data is usually impossible to find.
Talking about where the stuff is manufactured again. About 18 years ago I bought US-build Xantek inverter/charger. Still remember spending 2 grands for it. Anybody on the market for 1 ?