Inventronics Co. produces some of the highest quality LED drivers in the industry. They are AC/DC and power LEDs directly, no power supply necessary, and even have built-in 0-10v analog control, just add a potentiometer and you're all set!
The 26w model puts out 13-25v at 1050mA and boasts 85% efficiency and an IP66 rating (dust-tight and safe with dripping water).
Don't forget to pickup a AC plug (USA/Canada) for your drivers.