There are those, reading your post, who might try to take advantage of your lack of knowledge/experience, so watch your back pocket carefully. I would suggest that you fill out the Blade Forums profiles so those who aren't of that persuasion can know who they are dealing with, but without including information like "your favorite maker" or anything else that might hint toward your capacity to spend.
And whatever you do, do not even think that consulting a dealer for such information will do anything for you but line the dealer's pockets.
I suggest you buy the Bladeforums membership gold level, and that will give you plenty of private message communications ability. It's there you can learn more than here. Here, you will hear about collectors' favorite makers, not so much "investment grade". If you know anyone in knife forums, seek their help when it comes to determining who has a good reputation, and who may not, but do so in a private message conversation - and confirm the info you get from a secondary source. And realize that "investment grade" knives mean just that, because there are numbers of makers that become "hot" then cool off sooner than later, but the VAST majority NEVER become investment grade.
Good luck!