I purchased my Hinomi X1 chair a little while ago after having gone through several chairs from Ikea.
My decision was between this and the Hbada E3 Pro, I am VERY happy that I went with this one instead.
Main differentiator between the two is that the armrests can go lower on the Hinomi X1, and I can confirm that they go as low as you will need. If you need to be able to get them completely out of the way you should go for the lower tier Hinomi.
The lumbar support is AMAZING! And I have never used on and now I have it on the highest setting all the time and it gives PHENOMENAL lumbar support!
The Hinomi X1 gets my highest recommendation!
And lets be honest, if you are in doubt due to the high price, just splurge - it is worth the money! :-)