Can afford, and have purchased many higher end offerings. I can safely say I prefer my Buck Vantage Pro S30v for actual use. Is the Sebenza a good knife, yes but it definitely is not a great knife. Is it worth the $480 I paid for one? Yes. But my opinion of it being worth it sure as heck isn't based on function.
For me, a tool is first and foremost a tool.
Same reason I let go of my Southard. Manix 2 outperforms it due to the geometry.
I have no use for a knife which can't do it's task well, specially at the $260 range. 4mm blade stock, mixed with an aggressive hollow ground? Sorry but that spells cutting deficiency and confusion.
I can understand a folder like a ZT 560 being very thick, and chunky. It's meant to be a hard use knife and on my testing it is just that. A hard use knife.