Welcome to the Above $250 Club. You will now be inundated with advice from all sides. You'll have people tell you to research and make up your own damn mind...which, to me, and maybe I've doing it wrong, is part of what a forum is for: Asking for opinions that may lead to purchases. You'll get people ground heavily in their tribal brand camps that will completely gloss over your requirements. You'll have someone chime in about the foolishness of spending $X when you can get the "same thing" for $Y. You'll have someone tell you that spending $X isn't "high end" and you really have to spend at least $Y. I think some may expect you to spend 4 or 5 thousand dollars on a bunch of knives then sell off what you dont like. I'd love to have the time and money to do that
Heres my personal experience, which is worth as much as the digital ink I'm writing it in: Keep doing your homework...including taking in the responses you get here and go for it. I've been collecting knives for nearly 35 years. I just bought my first Chris Reeve. I have wanted one for the last 20. I missed the boat on the Sebenza 21. I "settled" for an Plain Jane Inkosi and actually found that I like it better. It was for intents and purposes a "grail". I dont generally spend $450 on a knife. I have a couple thousand dollars of $200+ ZTs and probably $10K in various Himalayan Imports khukuris that I have accumulated over the last 17 years. I spend money on knives, I just dont spend a bunch on ONE knife.
The Inkosi was a reward to myself for finishing up a business degree after putting it on the back burner for over 15 years. I can honestly say it is the best fit and finish of any knife I have ever handled. Its simplicity is its elegance. Its minimalist design is its longevity. Every line has a purpose. Every cut into the material for a reason. It's a knife meant to be used, cared for, taken apart, and eventually serviced by the mothership. The whole business model of CRK is to offer a product that will last a lifetime and be backed up by the company to keep it ticking. I plan on carrying this knife off and on for the rest of my days as a reminder of what one can do if they put their mind to something. I can afford more than the Inkosi, but it MEANS more to me than the dollars I spent because it was a goal. That makes it a grail to me.
I can't speak for the other knives on your list. I'm still licking my wounds from buying my Inkosi. However, I think regardless of the brand and knife you go with, I think it will open your eyes to what is available just a touch higher than what you have been buying. I'll be 39 next month, and I just got my first CRK. Who knows, maybe by the time I hit 60 I'll feel OK with spending $600+ on a "real" knife
Good luck!