This is the age-old question. What's the best, the quickest and the cheapest? As a 25 year salesman, my answer to that question has always been "Pick two out of three and I can do it for you." The best, the quickest and the cheapest varies individually day-by-day. But if you read the posts here from people who have experience in purchasing such products, you'll probably get a good idea of who is doing a good job satisfying the customer. As for buying from the manufacturers or wholesalers, most have non-compete agreements with the distribution chain. I don't discourage you from looking, but I think you are looking for a holy grail.