comfort craft electric tables

Hi!

I started a new discussion about this after reading the great "electric tables" thread because i was interested to hear more experiences about comfort craft---

the model 800 looks absolutely amazing and the tax credit makes it look that much more inviting.  so i'm mainly asking if there are any negatives: 

specifically, did anyone *not* like their comfort craft or find it didn't work for some people?  or did anyone find that it was 'overkill' and not necessary for their work and body mechanics?  

and i know i can ask the manufacturer this, but the website's "model 850" link links to the "800"--is there something called the 850?

and is the pillow set on the "800 STP" the equiv of a body cushion (which i already have?)

(the 800 STP isn't mentioned prominently on the website---it looks like it's the 800 plus stool and side-lying cushions---mentioned near the bottom of this page, above the two rectangular links: http://www.comfortcraft.com/m850.html)

also, i wish someone could tie my hands so that i don't buy it until the end of the year; if anyone has any techniques on that.....:)  

thank you!