I'd go for the high quality knife (Sebenza, Strider) for a couple reasons.
First of all, because you have the money for one now. It's not everyday that you'll have a good chunk of cash to spend on a high quality knife, so take advantage of the opportunity while you can. If you don't, and you are anything like me, the money you have "saved" by buying a cheaper knife will just get spent on something else (and no doubt something less memorable). You might as will spend it on a knife you will love and use for many, many years to come. And
in general in life, I have found that if you buy quality, you buy once. If you buy cheap, you buy many times. If you don't buy the higher quality knife now, you will eventually (if you are like me). And that's because you will always be wondering what that Sebenza or Strider is like and what you are missing until you finally buy one.
Second, because money spent on a high quality knife, is never wasted, IMO. Money spent on cheap knives however, hasn't been as well spent in my experience. I worked my way up from Leeks and Chives, and now just have a few high quality knives. Lower end knives have come and go. More expensive knives stay with me. I did enjoy and learn from the lower cost knives, but only until I moved up to the next level of quality. I'm not sure that you have to start with lower quality to appreciate higher quality things. You don't have to drive a clunker to appreciate a BMW.
Thirdly, higher priced knives tend to hold their value. If you change your mind about a high quality knife and want to try something else, you can always sell it in the Exchange for almost the same price as you bought it (if you have taken care of it and not abused it).
Finally, a bit of buying advice. If you are going to EDC and use your high quality knife, I'd recommend buying a slightly used knife from an established seller in the Exchange here on BladeForums. Knives are like cars in that they depreciate as soon as you drive a new one off the lot or take it out of the box. You can save yourself almost 10% by buying a slightly used one. The only thing you lose by buying used is the "thrill" of buying a brand spankin' new blade. To me it isn't worth the extra cost, but YMMV.
Good luck with your purchase! Remember to enjoy the hunt---it's half the fun!