Don't bother spending $400 on that one knife if you don't know what you like. It's kind of like going on a car forum as saying you have 200k to spend on a vehicle when you never driven one and the money is hard to come by for you. You don't know whether you like motorcycles, sports cars, hatchbacks, trucks, suv's, etc.
My advice pick up a more budget knife that you like the style of first than work your way from there gradually moving from what you like about that knife to the next knife always trying to improve. After awhile you find your tastes will change and you learn to appreciate smaller and finer details about knives.
Take me for example I was into modern one hand folders for years and than just picked up a more traditional knife and found I prefer them more as an old school slip joints has a habit of bringing me back to when I was a kid with my first knife a SAK and using it for everything. And I found that the thinner blades on most traditional slipjoints are far more effective at what I typically do than the thicker blades you find in most modern folders. Sharpening knives is something I find I kind of enjoy and I love how easy carbon steel blades are to sharpen, so going after the super steels that have insane edge retention that you find in high end modern folders actually ruins a bit of my fun.
I can tell you after a long time carrying a knife for normal EDC I take a knife with a blade length 2.5-2.75in (3in max) for what I greatly prefer, and a handle length in the range of 3.5in give a take a little bit of length, blade width about 1/16 and has to have a point to it, good grip, and preferably non-dlc coating. For a heavier duty work knife I prefer a thicker/longer blade, longer handle, heavy weight type of knife something that is closer to a Buck 110 in dimensions but lighter and better grip.
So to repeat myself, find what you like and keep trying to improve on it with more budget oriented knives. When you find something you really like go high end in a similar knife. You will probably find that you appreciate it more.