Depends on who your target market is: If you're targeting young new detectors who are motivated by what they see on tv then pick a "cool" name throw in lots of letters (Z and X are very popular) and make sure you have a VDI and buttons. They will feel knobs are dated and not cutting edge. The lifetime warranty on that model probably won't be necessary either because they will tire of the hobby quickly and be on to the next tv inspired hobby. If you're targeting the serious hunter, regardless of age, go with a subdued name and color scheme that won't make the owner feel silly or understate how serious the machine really is or look dated 5 years from now, black/silver tends to be a timeless choice.