Buy a ZT 550 Gen 2 and scoff at how those higher priced folders aren't better... Except for tolerances. I can deal with undetectable variations to get a price tag of under half with a stellar warranty on top of it. You can even get a sweet custom scale and be way under you budget.
I suggest the 550 because the two I have had were basically perfect. The first was actually totally perfect in every way. Ridiculously smooth action, opened like it had bearings, perfect lockup, everything lined up right. The second has two miniscule defects. The G10 scale is under 1mm smaller than the liner, and the centering isn't perfect (a little to the lock side). Otherwise the knife is flawless. Yes, ZT doesn't have the warranty of Strider, but new blades are only $30 and they cover everything else that isn't abuse related. I have found the knife to perform everything a knife as svelte as a Delica can, and can even handle some thrashing.
Everybody else might laugh, but I have handled a Sebenza and even an Umnumzaan, and I can tell you that they have very little over the "lowly" 550. Okay the Umnumzaan has the sweet roller ball lock, but that's about it. Think of it like this: you can get a Ferrari... Or a higher end Corvette that is track tested to perform about the same. The only difference is that one of them isn't as flashy, doesn't have the "soul" (that some people are brave enough to admit is a farce... a tool is a tool, soul is only there if you want it to be), and it costs a whole lot less. And the parts are easier to come by and cheaper (ZT practically gives away anything on the knife aside from blades and handles).