I have 2 different sets of walkway lights around my house. Out on the front walk-up, I have a set of 10 Malibu lights that I installed, which run on a timer, running of the main power supply. In back, there are about 15 solar lights around the landscaping that were gifted to me by my father-in-law.
The ones out front look nice at night, put off usable light, and require only a once-every-couple years light bulb replacement. The ones out back, they are in direct sun 6-10 hours a day all year round, and the suckers never give more than about 2-4 hours of light. I even replaced the rechargeable batteries once, using nice Energizer brand rechargeable. No matter.
Bottom line: every set of solar lights I've ever seen or owned have been utterly disappointing. The solar lights I have do include an amber light (which is nice and natural looking, whereas the typical blue LED look is ugly). But the amber light is only viewable for a short while each evening, and if there were rainstorms during the day, then it's not gonna happen.