I have been buying LED components such as LED strip lighting, amplifiers, RF controllers for the four circuit touch screen light switches(which are brilliant) and drivers, for around four years, from LED LIghthouse.
Their service is impeccable and they are always happy to answer any technical queries that I may have, always very patient and understanding. Equally important, they have always solved any problems I've had understanding something. Their prices are competitive, I've yet to find somewhere cheaper and certainly have found nowhere with the range of high end products they stock.
This is obviously why I use them time and again, top marks,
truly a service I've yet to find elsewhere.