My understanding is the Neoya dongle is just a transcoder, not an upscaler. So just a question of whether it's better to deliver the signal to the TV through an HDMI input, or component. Probably doesn't make a difference, but like I said my Wii's never even been connected to an HDTV so thought it was worth asking. Not going to spend the $30 on the Neoya Wii2HDMI if there's literally no difference. Also still curious about my question re: using Wii w/ the XRGB mini vs. directly inputting to the TV.
In that case, it probably doesn't matter. It might be more designed for if you are lacking component inputs on your TV.
There are a few opinions on upscaler vs direct input for Wii in this thread, might be worth a search, but from what I remember some people say it's better to go direct and others say they've found particular settings that make it look better, so YMMV.