Solar Power Motion Light

Solar lighting options?
I don't have time to do a lot of research on this so I need your help. I'm hoping to find an outdoor solar-powered light that either turns off automatically when it's light, or is motion-activated but stays on for a minute or two after kicking in. And of course it should be as bright as possible.
We just bought one (that we've rendered unreturnable) that is motion-activated and bright, but only stays on for a couple of seconds.
Also, how can you tell from the packaging/info how bright a light is going to be? I was looking over the selection at Menards and I didn't see anything obvious like watts.
The light we bought said that it takes a 15 watt halogen bulb but I think that's misleading - it's a brighter light than I'd expect from a 15 watter.
Price isn't much of an issue although I don't plan on doing anything that costs hundreds or thousands or requires a college degree to hook up.
A 15 watt halogen bulb is really bright, much brighter then a 15 watt incandescent. Wattage isn't how much light it gives off but rather how much energy it consumes. Lumens is how much light it gives off.
Cape Air progress of his "green policies" If people think that energy efficiency, they generally do not think airlines, but thinks Cape Air green, and his massive headquarters may soon become a net producer - and not the consumer - of electrons.
