Forget all the "guru's"! just remember "If you build it, they will come". If you design and build a cat that really performs, is asthetically pleasing, and has a good competative life, it WILL sell. The only determining factor after it is on the market is the way in which it is promoted and exposed to the public -- and that is the most difficult part of any commercial success, the PR work! It could be the worst product available but if it is promoted the right way, it can be a commercial success. If the promotion is bad or non existent, even if it is the best thing since "sliced bread" it will languish in obscurity.
Darryl