I bought a kra5213 last month and I love it. It was a huge upgrade for me but I'm just a hobbyist. It has plenty of room for my tools, and I even have a few empty drawers left. Plus it's basically a rolling workbench when I need it for that.
I paid $800 for mine and I jumped on it. My opinion is, know what you need the box for, know your budget, and follow your gut instinct--no matter how good a deal it is, if it's something you don't like, then you won't like it when you get it home either. I passed up great deals on shorter double stacked boxes because I wouldn't be able to use them as a workbench.
I missed a classic 78 for $800 as well. I really hated that, but I found this one and I actually like it better. The 78 is a heavy *******, stronger, and it's a deeper box than I have. But it has 11 drawers, where mine has 13.
The reality is, the shallower box is better for me because of the depth of my garage. I can pull my truck in front of the box, close the garage door and still have room to walk behind my truck. I just wish my box had the full length top drawer like the 78 has, but I can live with what I have.
I know this is a long post, I apologize for that. The deals are out there, you just have to be patient but also be ready to strike when they appear. Other than that, I guess my only other opinion is, get something that is bigger than what you need so you have room to grow into it.
One more thing...I knew my budget was <$1000 so I had to be picky and patient for the best deal. If your budget is $2-2500, there is a ton of stuff out there in that price range, and a lot of them will have a lot of tools included.