I have a bushnell, stealth cam and u-way, I would give the bushnell a good, but not great rating, u-way I love except the two end battery brackets don't hold the batteries very well, and have popped out on several occasions shutting down the system.
I have made several as well, and use several other brands at work. I think they all have good and bad points / features, from battery use, ease of operation, setup ease-distances etc., card compatibility, I think you need to research and find what will be best for their application, If you have specific questions, ask away.