I reckon they're all resellers, so the quality of their products may vary.
Since I liked the geometry of my rim brake VB-R218 a lot, I was tempted to get a disc version. VB however do not sell my size anymore and clear out their stock, so I needed to look elsewhere. After much back and forth with the QILEFU store, I decided to give them a try. It was helped by the fact that Aliexpress offered free return on the frame. The seller confirmed that I would have the option, even though they asked me not to order if I was planning on returning it (because they're likely never going to actually get it back).
I'm very pleasantly surprised by the frameset. It's lighter than my VB-R218. Paint quality is better except for some minor imperfections. All the accessories, like the headset cover, the C clip, the cover on the underside of the handlebar, the stem and seatpost wedges are actually of better quality with no sharp edges that needed any sanding. No sharp edges on the entry and exit holes on the handlebar. The plastic parts are reassuringly stiff and visibly made of glass fiber reinforced material. On my VB-R218, the plastic cover on the underside of the handlebar bends if you tighten the screws, for instance. It doesn't do that on this frame.
The BB threads were clean. The only thing I needed to do is sand the rear flatmount tabs to get the rear brake perfectly aligned. The fork was fine from the get go. The build as pictured weighs 7.9kg in a size XXL with pedals and all accessories. That's fine with me as some of the stuff on this bike could still be lighter.
