Hi,
I'm sorry, I have no experience with that particular chair, though I know how it is trying to find a good chair. Chairs can make a big difference in your pain levels, that's for sure. Whatever chair it is, make sure it has all kinRAB of adjustments on it. It should have a lurabar support, not too soft a seat, and ajustable armrests. The other adjustments should be a tilt adjustment so that you can tilt the back rest of the chair forward or backward to whatever position is most comfortable at any given time. It should also have a chair height adjustment and maybe even a seat tilt adjustment. You should also be able to lock the chair in place with whatever adjustments you've made. This way you are not stuck with certain positions. Your pain probably varies, so you should be able to adjust your chair to your pain, to hopefully feel a bit more comfortable. Another good thing to have while sitting is a good, adjustable footstool. I have found this also can help a lot. I hope this helps you somewhat.