Thanks to everyone for input.....
I decided to just keep the Cardo Freecom 4+ (F4+), even though it's not ideal for the Shoei Neotec II helmet. I had to use the adhesive pad, but it seems to be rock solid, and it did give me more flexibility in placement. The only real challenge I had installing the F4+ was sticking down the intercom boom. There is really only one tight spot where it can be placed, but it worked out.
As far as operation, so far so good. The music quality through the JBL speakers is beyond expectations. The voice command system seems to work as advertised. As far as volume, I'd blow my eardrums out if I tried to max it. I could listen to music clearly at 90 mph -- I didn't attempt to take speed further.
After playing around with the Bluetooth connectivity recommended in the Cardo manual, I tried the Bluetooth connect order described in the Nav VI documentation. I like how everything (Media/Phone) routes through the Nav VI, so I think I'm going to stick with it. I need to play with it some more, but again, so far so good.
In any case, thanks again for the help.
Where did you place the adhesive pad? I have the same set up on a C3 Pro, I moved the adhesive pad farther back on the helmet so I would not cover up the graphic (the C3 Pro Observer to be specific) and the adhesive ended up separating from the plastic (not the helmet) over a 4K mile trip. Did not blow off, but I did remove it and replace it after the trip. I can see now that even the replacement adhesive pad is not quite a solid as it should be when moved back on the helmet.