Corsair's new Air 240 is a decent choice for a high end Micro-ATX or Mini-ITX system as it is 15.6" x 10.2" x 12.6" (397 x 260 x 320 mm ) which is enough to squeeze in a larger sized GPU although not deep enough for most high end air coolers.  A self contained LCS is not a bad idea as the case ships with three 120mm fans and can fit another three 120mm fans and a pair of 80mm fans for air coolers, or up to a 240mm radiator instead if that is your preference.  The drive cages are all tool-less and strategically placed to give you more room for other components, it will be a tight squeeze for your hands while installing your system.  The Tech Report were impressed with the case and while it did lack some extra features like a fan controller it is worth the impressively low price, currently $90.

Ryan did a video review of this case back in August if you want a more visual overview.

"The Carbide Series Air 240 is a small-form-factor case with an interesting dual-chamber design. We loaded it up with our Casewarmer system and took it for a spin."

Here are some more Cases & Cooling reviews from around the web:

CASES & COOLING