I'd check out EnGenius rather than going with another consumer grade product. A lot of their products are between consumer and higher-end-business grade. Affordable and yet easy enough to setup for a lot of average users. I've been working in IT for 10 years, and I use them all the time in small offices and a lot of client's homes as well. Very good success rate.
Checkout the AC1750 model.
EDIT: If you're very network-savvy, try one of these:
http://routerboard.com/RB2011UiAS-2HnD-IN
But it's not the for inexperienced to setup. For the price/performance/quality though, you 100% can't beat it. Cheaper than most high-end consumer-grade devices, but MUCH higher quality and better performing. I've used these routers for 500+ user networks with complex setups.