Thank you @Bad_Influence.. that was a great explanation!.. Now I know. Perhaps my questions from here on will pertain to matters less fundamental ...but, then again.. perhaps not . Got to tell you I had to lmao when you said..
Hmm.. from someone who makes speed controllers, eh.. That makes me color blind and numerically eliterate - fixing the lights on my trailer absolutely makes my head spin!
Anyhow, back to the topic.. Like you, I was thinking that if ever I made a mod I'd look at a yihi or DNA - the DNA for obvious reasons, & the yihi because the SX Mini, although I hear nothing of them these days, has had a great reputation in the past.
But to me, the enclosure it goes in (whatever "it" is) is just as, if not more important & will probably represent a greater challenge than the electronics. [Edit]: I'm talking a box, maybe made of the wood of Aust. Malley root, or Iron Bark or similar, with stainless steel, or bronze chassis, topped of with beautiful ergonomics. Not askin for much, am I!
Ultimately, I want something totally unique but hey, I'll cut my teeth with a kit (or 2) & see where I go from there.
I havent had the opportunity yet to take a good look at @Whiterose0818's suggestions, but I reckon between those & @skiball's suggestions, there'll be a good place for me to start.