I have been playing with EB-Rick last night and today. It really sounds great! Amazingly authentic. The factory presets are fantastic and get you close to Rush or Yes or Lemmy or any of the bass heroes who used Ricks.
My only concern is that it is a real memory hog. So, I followed Bitflipper's note above and created/saved some instruments nki's with only 4 round robins for each of the Bridge, Middle, Neck and the whole Bass instruments. Even just using 4 round robbins this OTS Rick came very close to maxing out my memory on my home office machine, which has 8gigs. If I load 8 round robins patches I get memory warnings. I had to use the "purge" setting in Kontakt to lower the memory consumption, which is okay as it then only loads the samples actually used in the specific project. I can then save that purged patch for that project as a patch and the Rick acts more like other Kontakt intruments with more normal or modest memory demand. If I try to load any other Kontakt instruments on top of the full instrument with 8RR I get memory warnings. At first the Rick patch even crashed my office system yesterday, but that was trying to run more Round Robins. So, my advice is to make some smaller sizes of the nki's. Here are the files I made/saved to fit my office DAW.
Full Rick instrument 4RR nki which uses 3.47GB= 91% of usable ram
Full Rick instrument 8RR nki which uses 3.95gb = 95% of usable ram
Bridge 4RR 3.23GB = 87% of usable ram
Middle 4RR 3.22GB = 87% of usable ram
Neck 4RR 3.23GB = 87% of usable ram
Neck 8RR 3.69GB = 94% of usable ram
I have not yet tried any of the OTS products I just bought in this group buy on my home studio DAW which has more memory= 16GB memory. Obviously it will handle OTS EB Rick better and more round robins.
BTW, I also tried Strawberry Electric and Acoustic-Steel; neither of these were memory demanding instruments. They had "normal" or modest memory demand in Kontakt
I should state AGAIN that the sound of this OTS Rick is amazing. I have owned several Ricks before and still own a vintage 4003 Mapleglo. To my ears the OTS Rick sounds very authentic to me. My only concern is the heavy memory consumption and the fact that I may have to use "freeze" on the track with the Rick the first time throuch or at least use "Purge" and save that as a preset for that specific project. I probably will choose to use Cakewalk's SI Bass to first lay down the track, and then replace it with OTS Rick once the editing of the midi is done. Like Bitflipper said above, I suspect that replacing other Bass tracks with the OTS Rick will make the bass stand out in the mix. Good advice sir!
Summary==Great, authentic sounding instrument, but very demanding on memory.