I'd get a drop point "hunter" style knife with nice leather sheath out of a really good modern powder metallurgy super stainless like S30V, S35VN, etc with a 3-4" blade length and 7-8" overall length and micarta or G10 scales.This is a very useful all around config. You could opt for exotic wood burl, mammoth, bone, stag antler, etc scales for a fancier, more "presentation" knife.
I personally like fixed blades from custom makers Bret Dowell, Gene Ingram, Rick Menefee, And David Winston. There are numerous other really good custom knife makers, but those are my favorites in terms of design, craftsmanship, and reasonable price for what you get. I have multiple knives from the first 3.
You can often find knives for sale from these makers online, but demand is very high for them due to their reputation for quality. Therefore, you may have to wait up to 4 months or so to get a custom knife from one of these guys if you don't find what you like online from one of the custom knife outlets.