I bought a Spyderco Manix 2 with G10 scales and M390 steel new for ~$150 not long ago. I also bought a Spyderco Stretch 2 with K390 steel for ~$150 not long ago. I think ~$150-200 is a fairly solid point of diminishing returns. There are numerous knives with high end steels, great F&F, etc. under $200. Unless you're looking for something really specific, I think ~$150 is the sweet spot. Over $200 likely won't bring any significant gains.