Solar Synergy flexible/bendable panels (purchased from Solar Blvd.; terrible retailer) didn't last 6-months before they burned/shorted through. Warranty isn't worth the paper it was written on. Best recommendation after doing my own research (after the above negative experience): Go with quality hard panels. AM Solar is a reputable resource for information and purchase, which is where I purchased my hard panels.
Having said all that, and obviously not an 'apples-to-apples comparison', I have owned a 60w Powerfilm unit for a decade and it works great. But not enough output to provide proper charge for my 200a LiFePO4 battery.