For under 50$ it would be a tie between Mora and Martiini. I have samples of both brands and I am very satisfied with them. They come wicked sharp, hold an edge and are easy to resharpen.
I switched to fixed blades for daily carry for legal reasons. As long as itīs not a dedicated fighting knife (or maketed as such) I can carry up to just under 5" blades. Carrying a locking folder of any size is sailing in murky waters.
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If it isnīt broken, it doesnīt have enough features yet.