So our local bike shops are selling quick pro:er one, now I am thinking if I would just buy this or wait for XMCS Vrt…
It depends on what you consider more important. I decided for the Quick Pro because it is a much more established brand when it comes to producing and selling frames, there are many positive reviews and the company in general seems solid. Moreover, the fact that many teams, including Euskaltel, are using their bikes demonstrates that they are, at the very least, comparable in terms of reliability and performance to racing bikes sold by western brands.
XMCS, on the other hand, is much more established in terms of wheels, but not as much in terms of frames. The first VRT frames are being shipped right now, the sample size of information that can be found online is extremely small (N=1, Patrick Lino's YT channel), so I just decided to go for the more tried and tested alternative.
Moreover, I prefer the look of the ER:One over the VRT, in my opinion the proportions of the VRT frame, in some area, could be modified to improve the appearance (but this could impact weight, stiffness and aerodynamics if not done properly).
Long story short: I believe they are both fantastic frames and that the differences among them are extremely small in a real use case scenario for amateurs pushing around 150W to 250W (average) per ride (provided that the geometry is ok in both cases).
At the moment the ER:One is a much more tried and tested option, the brand is getting gradually more recognized in the western market and their online presence is more similar to those of western brands. The VRT, for the moment, is a much more niche product confined to a bunch of people reading specialized forums and looking for chinese aero frames on Youtube. I do not doubt the technical qualities of the frame, especially since XMCS gives the customers 5 year warranty, but I would be much more inclined to buy the frame after 12-18 months of it being actually available on the market and extensively used...kind of like what happened to Quick Pro ER:One.
Despite choosing Quick Pro over XMCS for the frame, I am leaning towards XMCS for the wheels. I have not found, at the moment, a comparable wheelset in terms of specs and price for a 60 or 65mm profile, 23 to 25mm IW and CX-Ray spokes.