For the uninitiated...
*****Chair Spoiler*****
Almost made this my new avatar thingy but I honestly don't know which weird chair I like more. Plz advise, tia.
I think it all comes down to purpose here, SB.
Are you going for function? Productivity? Physical well-being? Stick with the semi-standing back saver chair.
More of a stylish, "holy crap, it's a antique velvet truck. THAT I CAN SIT ON!" Well, then I believe the choice is quite obvious.
T's and P's during this tough time, bud. I know you'll make the right choice.