I have a 405 and shoot the Fuji 100c and 3000b when I don't feel like experimenting on film or just want a quick shot. They aren't quite as cool as T55, but any of that you find will be aging rapidly and less and less likely to work well. For learning LF, the Fuji instant is pretty good. You can still make most of the usual mistakes and get them out of your system before going to film and you can see your mistakes and successes more quickly.
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