Since you are considering a $200 knife, you may want check into the Real Steel E771 Sea Eagle. It is about 2 to 3 times the price of most budget knives, but it is well worth it. It is thin and light, but very strong. It's near your blade length limit of 3.74". Amazing flip action on bearings. Mine came with a not well done edge, but othe wise it is a very excellent folder and my favorite. The Sandvik 14C28N steel seems pretty decent because it took a good bit of effort and time to properly sharpen the edge. Cost around $42 for G10, $47 for CF at Knife Center.
The picture below was posted by NuggetMcNugget in Post 689 here.
