The Trustfire Z1 I ordered maybe a year ago or so ago from DX came in perfect working order with good fit and finish. It quickly became a favorite light that holds up well against a few other more expensive lights I own. I love the size, the color, the knurling and the form factor and the memory function actually works quite well. The clip allows it to "back stand" so you can have it pointed at the ceiling. You can even run it without the reflector in a sort of "candle mode". The emitter is well potted and seems the design sheds heat nicely. It likes running on a 16340.
My Z1 is an XPE-Q5 but it seems that Manafont is offering an XPE-R2 version of the Z1 (SKU: 7896) for a buck more than DX is asking for the Q5.
For a budget light that costs around 17 bucks it's hard to go wrong with one of these.