Festool,. that's a little too esoteric for me where powertools are concerned..
I mean, don't get me wrong, they are amazing.. but man do they cost!
By the way, the "plunge cut" aspect is something Porter Cable was doing (slightly differently) way back in the 1940s or earlier...
Most circular saws adjust height via tilting, PC had one with a rack and pinion or worm gear for 60 years or so up until the late 1990's