I recently replaced one of my 10 solar panels with a new Vortex panel. The Vortex is very different looking and is completely flat compared to my existing panels with cylindrical ridges. I reviewed the spec sheet and it was reviewed by a Florida test lab. However, I would feel better if someone has real world operation. Thanks. Also, it took 6 weeks for the supplier from Florida, Solar Direct, to ship me the panel. Also they charged my credit card 4 weeks prior to shipping , and that same credit card was used fraudulently recently. Coincidence?