My buddy is getting married in a few weeks, and I'm using

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My buddy is getting married in a few weeks, and I'm using that as an excuse to cop a new navy blazer. I have one I bought when I was in uni, but it's not something of any significant quality. Now that I have a proper job, I'm looking for something nice that will last me 5-10 years of low-moderate frequency wear.
What brands do you recommend, and what should I avoid.
I'm looking for something in a slimmer/muscular fit (bigger chest, tapered waste), but nothing too skinny/tight in the arms.
I want more muted brass/bronze, or muted silver/pewter buttons, or smoked mother of pearl if I can't find anything else (I know you can change the buttons easily so that's not a huge point of contention).
Price range: ~200 - 500 USD (I want to spend as little as possible, but willing to spend more if I find something great).
tl;dr: Help me find decent a navy blazer (single breasted, two-button, side vents, modern/muscular fit, wool/tweed, no cotton/linen option).