Looks and smell only tell you so much about a male, and the real test is growing out a batch of his seed to see what the daughters do, which breeders call progeny testing. It delays committing to a father, but it catches males that pass on stretch or weak resin despite looking fine. A quick progeny test with a handful of seeds per male is walked through at https://breederregularseeds.com without needing a huge space. The best looking male in my last run produced the worst daughters.
