Hi BA,
I guess my opinion is biased as I've ordered a Poly 530, however for your intended use if it was me I'd go the Poly 410
They are super quiet on the water both underway and at rest, and for bream, bass, barra etc stealth is very important. The Poly's don't have the sound of the water slapping the hull at rest that you get in all tinnies, plus they seem to handle chop a lot better when underway. They are also very stable at rest for their size.
I've spoken to a lot of people who own alloy bream/bass boats and are very happy with them, although those of them that have been in a Poly always seem to remark on how quiet it is