Lumatek dimmables have been %100 reliable for me, I have used ALOT of them
For the "best" 1000w ballast I'd go with Hortilux's 1000w e-ballast, warrantied for 5 years, made in Japan. Unfortunately they don't make any smaller ones.
Lumatek dimmables have been %100 reliable for me, I have used ALOT of them