If you can find it back I discussed it with Rog.
After going back and forth I decided on the lower priced Synergy and bought a pediatric regulator. We just arrived in Florida and I am planning to use it for insufflation.
Rog also gave me the settings. If you can't find the posts let me know, some I might have saved. My memory is not the greatest and I often have to look up things.
My decision was based on (partly my personnality) first buy the cheapest to experiment for a year and then decide if I need a better one. At this point since I have only abnormal cells (not cancer)this should suffice.
Check with John (mygettinplace), somewhere in the last 1-2 months he was willing to sell the small one for around $319 to CZ members. I think I paid $329.
If you can't find it, here is link with his phone # and e-mail address. You can also check on e-bay.