I installed a pair of PSB CS1000 speakers a few months ago. They sound very nice, and have an extremely flexible mounting system that allows them to be adjusted on all axis- whether mounted vertically or horizontally.PSB CS1000 speakers
The Boston Acoustics (Voyager 7's) sound great also, but the PSB's have better bass response, which is always challenging outside.Voyager 7
I've used Bose, Boston Acoustics, and PSB outdoor speakers now. The Bose hold up well in the elements, but don't have the sound quality of the BA's or PSB's. My BA's grills rusted over time, despite being protected from rain and sun. (these were not the Voyager 7's BTW). Happy with the PSB's now. They are a bit larger, but that is the price for better bass.