At 4" or shorter, sorry, but "yawn".
At 5", you've got my attention but it'll have to be damn good to beat the Sifu (5.45", strong although not in the same territory you're talking about).
At 6" or more, you've got an order so long as the price doesn't top $400 or so - and even then I'll think about it.
I'll tell you the same thing I told REKAT: California is 1/9th of the US population, and we can legally pack any folder concealed. But we've got sucky gun laws. The Sifu is GOOD but it's not the last word in megafolders.
The Sifu is selling REAL well.
Jim