1. (snip) I will tell you that the +9 tapes can present the potential for being a little harder on your tape path because of the thicker back-coating...Do I have that right guys?
3. Again, if you want to buy new +6 tape, RMGI SM911 is it. The only other current manufacturer is ATR Magnetics, but I think all their stuff is currently +9 tape.
1. Yes, the thicker tape can be harder on transports, some of which, like the 388, I believe are designed for 1 mil tape since they use 7 inch reels. Also, trying to run the hotter levels on a machine designed for +3 or +6 tape will likely give you record amp distortion before the tape saturates.
3. Don't forget that RMGI also makes SM 468, which is also a +6 tape. Not everyone who sells RMGI sells SM 468 or sells it in all available formats. 468 is a good tape too. I have seven reels of EMTEC SM 468 in 1/2" that I'll be using on my Otari and then I'll have to decide whether to go with SM 468 or SM 911 (or ATR!) when I need new tape.
Cheers,
Otto