personally I always get the cheaper motherboards. There are a lot of highly rated motherboards in the $60-$80 range.
Your priorities for gaming performance are GPU then CPU, then RAM and Storage as a distant 3rd/4th place. Motherboard and PSU are more for durability & features. Yes they can be expensive, but generally you're buying more ports or features, more cooling, more stable power supply, etc. Very important stuff, but nothing that correlates strongly with performance.
Really most of the cost of a mobo over $100 comes providing hardcore SLI/crossfire for 2, 3, 4 card set ups. If you are going with a strong, single card (always the better choice) than I'd definitely do something like vinhn is mentioning. Get a great single board & put the money into an awesome GPU.. It's just an outright better use of the budget. You will get pretty much the same stability as long as you pick a high quality, trusted and reviewed board, no matter ~$60 or ~200.