I doubt I'll be switching to Doo, but I will say that SHOT seems like something I would pay good money for. I can live with pulling the handle every time, and the idea of paying more money and carrying extra weight doesn't appeal to me, so I don't see e-start on any sled of mine until I can't stand pulling the rope any more (hopefully that'll be a while). I think I'd have to be in pretty rough shape to not want to pull the handle ever, so long as the sled is easier to start in the cold than my Pro at least. With just a few extra pounds, SHOT is worth the price, just not something I'd switch brands for at this point.
Poo used to be the better value, but it's hard to find one for less than the equivalent Doo anymore. A friend just picked up a '22 Doo 850; he might have bought a Polaris at the same price, but everything was more. He mostly upgraded for the features and chassis improvements, not power, and I'll probably be the same boat when I upgrade. I think if anything, the market for a value-oriented sled is going to grow, but right now the most basic models kind of suck, and you either accept that, or you fork over $2-3k to get what you want (at a cost to them of $500 or so)
Anyway, the handling of Doo/Lynx vs. Poo seems to be converging. Doo is talking about a "planted" feel with the G5 expert (not necessarily in those words), while the Khaos is a big step the other way. I'll definitely ride all three, and I'm pretty sure one priority will be something more playful than my Pro. That said, if someone can crack the code and build a great sled for closer to $10k - one that has enough oomph to not be a straggler and comes with good enough components that I won't end up systematically replacing them - I might be there regardless of the name or engine or whatnot. At the end of the day, it seems like they're all converging on the same point: it's turning into Coke vs. Pepsi. With that, plus Poo stepping in it with recalls recently and mostly pushing the top end of the market, I'm not sure brand loyalty is enough to keep me with them. So I'm watching Doo, and really interested to see what Cat comes up with. And hoping we can somehow sidestep the fallout from Brandonomics, but that's another topic...