My last few cats had the mountain seat, its is higher with a firmer more narrow seat.  I get the plush argument, but it really comes down to your style of riding and maybe your height too plays a factor, like scottyr said, some seats just feel more like a dirt bike while others do not.  my issue of a long day on the comfort seat is my hips/groin get sore from the angle, and it’s just not the same feeling powering through a corner, tight to the right as you shift your weight to the inside when you are on the same sled with the two seats.  It’s nice to have options for sure…I have three seats right now for my sled - stock comfort, my 1+1 seat and my MXZ seat…lol. 

More snow yesterday, sunny clear today, more snow coming tomorrow. Ski

Not sure why anyone would want a firm seat. Doesn’t make sense to me. I’ve put on plenty of 500+km days on my viper, and my arse starts feeling it after about 350kms or so. I’m only about 150lbs and lean though, so maybe that’s why.  I haven’t ridden a 500+km day on the new doo yet, but man is that seat ever nice compared to the viper seat. So plush! 👌🏻   I think if the viper seat was the same as the doo, people might actually think the cat suspension is good 🤣

If you spend more than 15 mins on a new Polaris and a new Doo, you will quickly realize that the seat on the Doo is too soft and squishy if you are an aggressive/active rider.     My 26 MXZ seat is like a pillow that sucks you into it whereas the Polaris allows you to sit on the seat more like a dirt bike.      I loved the LYNX seat for this reason.   If you just plop down on the seat and rarely move then you will probably like a Doo seat.     

Got it - that helps. As you know, I ride old tech - and it's just what "i know".