Wish I lived closer to mac shack, but its probably better that I don't. I was in the area so met a friend for lunch. It was a busy Friday but the line moved quickly and the smell was incredible. My friend described it pretty accurately as a pasta version of chipotle - just meaning that its quick, reasonable and customizable.
I decided on a special made up of mac and cheese made w Gouda, big pieces of bacon, a touch of tangy bbq sauce and I added chicken. I was a little hesitant about the bbq sauce but it was just like a bbq chicken pizza but in pasta form! Can't go wrong with that.
It was a huge portion for about $10 and they have a lot of great options to customize your pasta. Its not really a full service restaurant - you take a number and they bring your food when it's ready. Because of that, I was surprised that they had very good service. The manager (who was also the one who took my order) walked around making sure everyone was happy with their food. He brought me a to go box, cleared our dishes promptly.
Mac shack was a winning combo of good food, low prices and unexpectedly great customer service.