I like my Zebralights. I have several of them. That said, mine have had a large number of problems. Possibly, because I tend to preorder them so I get the first release with all its teething problems.
SC52w - overall works fine, except on 14500 turbo doesn't last anywhere close to 1 minute except on a completely full cell. If the cell is even slightly depleted turbo may only last 2 or 3 seconds.
SC600 - defective switch. Returned for warranty repair. Problem fixed.
SC80 - defective driver. Low and medium modes work fine. Turbo works fine. H2 doesn't work at all. Attempting to switch to H2 causes the light to briefly blink then turn off.
SC62w - defective contact between driver and body tube. Initially light worked great, but within 3 days the light wouldn't switch to turbo or even medium. Returned for warranty repair. Now works, but like the SC52w it won't reliably stay in turbo on anything other than a completely full cell.
SC5w - worked great for about a month. However, brightness has greatly diminished. All modes still work... just much dimmer than they should be. My guess is 20 lumens on turbo with a fresh cell. Haven't gotten around to returning this one for warranty repair yet.
SC32 - same issue as SC52w. I'm not sure this is even a defect. It might just be Zebralight's programming design choice. But I do find it annoying. I want to be able to run in turbo mode on a lithium ion cell when I don't have a cell at 4.2 v installed.
SC62d - no functional problems. Works perfectly, though the anodizing is uneven.
I like Zebralights, but I'm not sure I'd trust any of mine for EDC carry. They seem to unreliable.
I only own one Manker, my BLF Special Edition A6 which I received last week. It looks and feels well-built, but it's too big for pocket EDC. I like the look of the T01, and that it's offering something new: big throw in a non-zoomie pocket light. I'm not sure I'll get one though. The UI isn't appealing to me, and the SC600-size head maybe too big for pocket EDC.