Wind Walker :
I do seem to have space for a standard ATX since it's a mid-tower, and there are screw holes about 1.5" to 2" below the micro ATX before it touches the PSU. For preferences, 2 way SLI/Crossfire would be nice, crossfire preferable due to my AMD GPU. 4 SATA slots to be safe, and PCIe-x16 due to the GPU as well.
I guess what I'm asking would be manufacturer recommendations, though an exact mobo model is nice. ASUS, Gigabyte, MSI... what would be best in this particular situation?
EDIT - also, for curiosity's sake, What's the best option if budgets weren't involved?
Thank you guys very much, by the way. I've almost narrowed it down to where I need.
In which case, the MSi H97 PC MATE or the ASRock H97 Pro4 would probably be the best options for that chipset since you have the room for it. And really, it's hard to give manufacturer recommendations since it varies from mobo to mobo. I've had both Asus and MSi and never had any problems. It's best to check reviews of each motherboard and see if there are any repeat problems, though usually the problem is DOA, which can easily be replaced.
As for Crossfire/SLI, I haven't found an H97 board that has two PCI-E x16 3rd gen, let alone ones that run at similar modes. If Crossfire is something you plan on doing, a Z97 board would be beneficial here. You can usually find a nice board around $130, and really, any manufacturer would be good as long as they have good reviews. One thing that you definitely want to look for is one that has two PCI-E x16 3rd Gen. that supports x8/x8 mode. Usually they'll state that under specifications for PCI Express 3.0, such as they do here:
MSI Z97 Krait. The reason for this is so the second card won't be bottlenecked by low bandwidth, since Crossfire only works well when both cards are evenly powerful.
As for curiosity, the i7 4790k or the i7 5930k are probably the best options period when money isn't an issue. The 4790k is the best for gaming, while the 5930k is the best for multi-tasking and applications.