We should add a new selection:
"Cause I've already spent lots of time making what I got now work -So, I'm looking for more stuff that needs lots of work..."
Actually, get product that has some REAL R&D put behind it at a resonable price. Get pictures, videos and a parts list out there (very detailed) for what you are seeing run on the video. This is what was done by RC-Hydros and I think it worked out fairly well. Good pictures, videos, good instructions, good support and the R&D behind a hull design that has the capability to go the distance.
The majority of the buyers will be sport runners -So a super fast boat that needs a perfect and very tricky setup with highly modified engines, pipes and props will not please most of the customers.