I don't think you can get better than 150 @ 1A.better than hfe=150 up to 1A.
Even the MJEs cannot achieve that, no where near it.
You might get 80 to 90 at 1A if you select carefully, but it's going to take a lot of downloading of datasheets to find the few that can match 80 to 90.
250 @ 1A is impossible as far as I know.
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