Although I must agree with Shasta that cassette is long gone, back in the day I used TDK MA-X. The cost for type four tape was always worth it over type two.
Keep in mind that cassette speed is 1 7/8 ips, which leaves a LOT to be desired.
At this point in time, I'd go with the best ADC you can afford and run that into a decent CDR.
If you REALLY want to play around with analog tape, RTR at 30 ips would be the way to go, but that could be extremely expensive if you intend to use quality equipment and tape.
Keep in mind that cassette speed is 1 7/8 ips, which leaves a LOT to be desired.
At this point in time, I'd go with the best ADC you can afford and run that into a decent CDR.
If you REALLY want to play around with analog tape, RTR at 30 ips would be the way to go, but that could be extremely expensive if you intend to use quality equipment and tape.