Hello
@msEmma !
Sorry I didn't respond earlier, but spent the day doing yardwork before the cold and wind hits Nebraska tomorrow. I'm just glad I have a massage chair to take away some of the stiffness for these old bones.

Just some quick info so you will have some idea of who this information is coming from. I am a retired accountant, male but not necessarily "Mr." Hopefully just a happy old guy doing his best to enjoy life. My first hand knowledge of massage chairs is extremely limited since I have only sat in and tried two chairs, both Cozzia. So, for what it is worth.....
To start there is little I can offer to compare the Qi SE to the Schults since I know absolutely nothing about the Schults. In my quick and brief search for the Schults, while there were some glowing reviews listing the features, I found little to nothing about the construction. Such as does it have an "L" or "S" track, how many air bags, is it a "wall hugger", how many rollers and do they go in and out as well as up and down (and are they heated), to name a few. Further research may find those answers, but I didn't find it. But even with or without that information, by no means does it mean that chair would give less of a massage.
The Cozzia Qi SE (cz-710): So far we (my wife and I) are extremely happy and satisfied with the chair as well as the positive experience with Cozzia support. But we are still learning new things about the chair. I could talk about how it makes us feel better, more relaxed, and on and on with those kinds of things, but for all I know, many others may provide those benefits and results. I will mention some features we really like and would not go for any chair without them:
Wall hugger. This would seem like a trivial feature, but given the total footprint such a large piece of furniture requires, I would think most would welcome it.
The "L" track rollers: This is probably the most important feature both my wife and I agree we would not give up! Having 4 massage rollers that continue under your seat to the back/top of your legs is to die for!
Spine Adjust and Stretch programs: Having spent a lot of time at the chiropractor and kinesiologist(sp), while not to that level, I find these features very beneficial.
Spot massage: It's nice to be able to pinpoint a specific type of massage in a certain spot to relax a tight muscle or two. Even better since that spot can be adjusted during massage and/or other treatments can be included. Pretty much pick what you want, when you want, where you want it, and for however long you want.
Custom Massages: You can customize and save up to 3 massage programs. I've played with this a bit, but with all the pre-programed massages, haven't felt a need to set one up yet.
Touch screen tablet controls: A very easy menu system easier for me to navigate, easy to see and operate in its mount and long enough cord to hold. But don't do that since my arms are in the arm massage slots. Probably my only con on the chair is that the tablet is hard wired instead of Bluetooth, a small con at that.
That covers moist everything I can think of right now. I imagine most or all of those features could be found in other chairs, but from all my research, I thought the Qi SE had everything I wanted/needed at the best price. If you haven't yet, check out the Cozzia USA website for more details and while there, check out the Qi (cz-730) chair if you want even more of a chair. From their site, you can view a more detailed manual for even more information.
Bottom line, we are really happy with the chair. Would we pick another option? That would only happen if we tried another chair and that is not likely to happen. Good luck! I would be interested in what you end up getting. No matter what you get, I'm sure you will enjoy the benefits!
Oh! Forgot to mention and it has nothing to do with which chair you get! As soon as we got the chair home and ready to go, I couldn't wait to try everything out. So I started with the Demo, then started trying all the pre-programmed massages. I probably got 6 or 8 massages in the first 24 hours or so. I ended up with a bit of a soar back and thought "Oh,

!" I spent all this money and it may not work for me! I did some research and found some warnings not to over do it. Backed it off to only doing it 3 or 4 times a week and all is well. It's hard not to go hog wild at first, but take it easy.....it will always be there for you!
Good luck again. Hope you find what you want!
Disclaimer: I do not now nor have I ever worked for or have/had financial interest in Cozzia.........even though it may sound like it!