1/4" reel to reel tapes for mastering/mixdowns

hi folks,

wondering if anyone has any experience printing final mixes with the new reels offered from either ATR or "Recording the Masters" SM911 7" reels. Would be open to any other suggestions, including used options if necessary.

I have an akai m-9 and an akai gx-286 tape deck

furthermore, in my amateur studio, clients often times ask for cassette mix downs, for this I use a tascam 122 mk 1 with maxell xl 2 s 60/90 tapes, perhaps you have some other recommendations for cassette tapes.

TIA