I would recommend the Husky ... I have a few knives from them that I use at work and they are 7 years old and still going strong. It is well designed, ergonomic and easy to open and close. I'm sure they put the same engineering into all their products.
Kobalt, on the other hand, looks great when you're looking at it in the store. They seem to be well made, but they're not. I've had a few Kobalt products that broke on me within a month of use, and I am not hard on my tools at all. After the third time this happened and I had to return it for a refund, I swore off Kobalt and I advise everyone not to buy them. Especially if you're going to depend on it for your job.
I've never bought anything from Harbor Freight, but I used to window-shop in their store and read their catalogs a lot. I hear nothing but good things about this company from those that do own HF tools.
I'll second the husky. It's extremely robust (much more so than the Kobalt boxes) and half the price. Just doesn't come with the silly speakers.