Can you recommend any type of solar lighting for paths / walkways?

I have a few solar lights in my backyard and I suppose they have lasted a year or more. At first, they stayed on for a long time after dark. Some of them died and I replaced the batteries. Some more died. I can’t seem to figure these things out. Is it best to just not use solar lights or is there a solar light set that you recommend?

If you don’t use solar lights, how hard is it to install regular lights (electricity and all)