Recommendations for a new camera

Question

Hi all, I need some assitance in selecting a new SLR for a company I work for.
A little bit of background information first. I'm primarily a web/graphic designer with some photography experience. I took 3 semesters of photography in college and currently own a Rebel Xti with two prime lenses and a YN565EX Flash. My camera does pretty good considering it's age and spec range but it's not quite going to make the cut for a project we're working on. 
The company I work for builds web applications and websites for government clients. The project I'm on is for an internal website (sub company) and we plan on using all custom photos. The 'boss' doesn't like stock photography. Problem is, we need a camera that's going to hit the quality of stock photography. 
Budget: I'm not completely aware of the budget, I just know it's going on the company credit card. I'm guessing around $2-3 grand. 
Awarenss: I've read across other forums that just getting a new fancy camera won't automatically give you super awesome photos. Good glass and lighting kits make a big difference. Hopefully my Flash will work on whatever camera we end up purchasing.. 
Cameras I'm looking at:
EOS 6D
EOS 7D
EOS 70D
We're hoping to make a purchase quite possibly this week. And again, I don't claim to be a master photographer but I'm not afraid to get my hands dirty with an SLR. I feel like operting SLR's are a lot like driving stick. Once you get it, you can operate just about any of them. 

Answer 1

Idk, I've been using the XTi for quite a while. It's shown a gradual decrease in quality since I started using it out of college. It was essentially an upgrade from my POS manual film camera I had during 3 semesters of photography in college. Once I finished translating some of the settings on the XTi from the POS fuji, I was able to get some d*** fine shots. It's biggest issue was low light situations. If I was almost anywhere in doors, might as well have used my iPhone to take the shot. Also, a big issue I've had on it for years and a few others I know have experienced this on my camera as well...it's not an All Star in the focusing department. I've mentioned that in a few other forums and I've had many nods in agreement on that one. 
Another forum is suggesting the Fuji X-T1. I've done some quick homework on it and while I'm impressed with it's low light performance, it looks like it's basically an automatic alternative to a full blown manual. That said, I'd like to reiterate a previous point I've tried making haha. I'm not intimidated by more advanced equipment. I'd never used an external flash in my entire life and just recently bought one. Read the manual for about half an hour, hooked it up and within about an hour had the hang of it. Doesn't mean I know the equipment by heart, it just means I'm pretty comfortable learning new equipment. 
The mindset of my creative director is this..if we're going to get a new company camera, we might as well get a respectable platform to work with. In the event that I move up to developer and someone else comes in my place with even better lenses and better lighting equipment then the purchase was worth it. We now have a very useful body. 
Someone on another forum mentioned this as well, "stock photos of the corporate environment are supposed to be bright and clean". While I agree with that, we're intentionally going a little darker. We're going to have responsive text over the many of the images. Also the navigation menu is going to be 'very different'. It's going to be a fully collapsable accordian style nav menu (expanding left to right like you would on a computer hunting for a file) with some transparent 'glass-like' effects so the images 'semi' show through them. 
I'm actually kind of surprised by some of the responses I'm getting across forums. I know 22 MP doesn't make you the God of photography but if all photographers kept the mindset of "keep your old equipment and just replace the lenses and lighting equipment", then hardly anyone would bother upgrading to the higher end body's. Photographers must buy the higherend body's for a reason. I'm not suggesing the company I work for should go all out and buy the top of the line Canon or Nikon. I'm just saying, I'd be willing to bet half my year's salary that even a 70D with a starter lens could take a better shot than my XTi with a starter lens.
The TWO BIGGEST things I'm after are this.
- Strong focusing
- Good low light performance.