Most older prerecorded reel to reel tapes were actually dubbed high speed, which we all know created a poor quality copy. Factor also that they were dubbed to a slow playback speed, its not hard to understand why they never really had a fan base. I had a Revox high speed B77 mk2 and it was terrific. It would not however have been optimized for the tape project stuff since some of it is 1/2" rather than 1/4". Lastly the tape project software is WAAAAY overpriced.
Pre-recorded Reel-to Reel tapes
About 30 years ago, I had a nice 4 channel Reel-to Reel tape machine. I think that was the best fidelity I've ever heard. I have researched a little, but haven't found many pre-recorded tapes available. I guess it's almost like searching for 78 records. I'm loving my vinyl, but wish I could find a place that offered many titles of tapes. Is there such a place?