I don't have either one but have been looking at Kifaru and others and will give you my opinion from years of backpacking:
First of all the weight difference between the two shelters is only 1 lb (3.5 lbs 4.5 lbs). The rest of the weight difference is in the kind of stove that you choose but remember that a smaller stove takes smaller wood and has to be fed more often.
Also, I have found out that while I love small tents in the summer they drive me crazy in the fall. In the summer there is 15+ hours of daylight and I don't spend NEAR as much time in the tent, but during the late fall (Nov) the days are so much shorter I spend much more time in the tent. Being able to stand up in the Sawtooth (or some other model) would make all the difference.
Also, look at how close the sleeping bags are to the stove in this photo of the paratipi:
Most good down bags cost around $300 or more (my Marmot cost $349 ten years ago). I would not want a tent that gets my expensive sleeping bag that close to something that can ruin it.
I have not owned the paratipi and some of the guys on this forum could probably give you better info. You might also surf over to 24 hour campfire. They have a backpack hunting forum over there that deals with these and other brands of shelters that you can put a stove in.