Organ Sessions demo’s last way longer, I listen to several and I like them very much, however some people here say that Organimation is better, I wonder why ?

What is your opinion ?

Both are very good products. The main difference is that Organimation uses factory waves and Organ Session includes new samples. I’d say that with Organimation you get very good organ sounds but with Organ session you get very good organs and also more variations. Downside of course is that it loads slower in XS, but you can always buy XF.

One of the main advantages with an Organimation sound set is that it offers thicker, more authentic rotary speaker effects than the Yamaha ES series, XS/XF series, Tritons, M3, and (available soon) M50 are designed to produce.

Organimation has many different variations! Though it takes up substantial user space! The variety is off the hook! I keep these variations in my gospel genre of music!,,,
I currently load it to my motif xs6

Its all good

it takes up substantial user space! Do you mean that it’s a sampled voice library that uses a lot of Mb’s ?

Organimation for the XS / XF does not require sample RAM. It uses only internal (ROM) samples.

If you load the whole sound set, Organimation takes up 128 voices (one full bank), 41 performances, and 4 masters.