It's not "noisy," it just doesn't have the better IMD performance that the 50V FETs offer. I'd go for the ALS-600 also, it's more sensible.
You can easily limit your transceiver to lower power if you wish; several ways to do this which will work on "all modes," depending exactly what that transceiver is. What is it?
One fail-safe way of course is to build more padding into the amp itself, by adding 3 dB more loss to what's there now. Not difficult to do at all. Another way with a lot of the old tube and hybrid rigs is to add a source of adjustable negative bias to the ALC input port. Thousand have done this with a simple 9V battery and a 1 Meg pot connected as a voltage divider.
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