I bought a set of mpow ones on Amazon that i put up around the garden for our puppy. I've actually been quite impressed with how well they work considering some peoples experiences are hit and miss. Our garden is south facing, so even if we only get a few rays of sun during the day they seem to charge up very well. I've got them set so that they emit a low glow throughout the night, and if it senses motion then it they go to max brightness for a short duration.
Can't comment on the durability of them yet, although arguably i've tested them through the worst time of the year for charging solar, and so far so good.