I've owned MultiDeco for several days now and have had a chance to experiment with simulated dives using Buhlmann ZHL16C + GF. I've learned a tremendous amount by entering a stock, relatively short decompression dive, or series of dives, and then varying the GF hi, GF lo, or both. Observing the pattern (deeper and shallow stops) and the duration of the stops has been extremely educational. I highly recommend this kind of activity for other divers like me who would like a better understanding of their decompression algorithm. I also have a new appreciation for computers that run this algorithm for the transparency of running and adjusting it.
Though I have not taken them for spin, MultiDeco also runs VPM-B, VPM-B/E, VPM-B + GFS, and Buhlmann ZHL16-B + GF
Good diving, Craig