Just posted up my Vega 2020 review complete with extensive comparisons to the CFA Dorado 2020, Atlas and OG Vega in addition to some other single-DD models such as the A8000 and Xelento. Review
here.
I think most could tell I was not completely happy with the sound out of the box, it was a bit too full and laid-back in the midrange for my preferences despite the step-up in coherence and timbre over the previous CFA DD flagships. However, after testing with the bright leaning Azla Xelastec tips, I found myself enjoying them a lot more. The E-tips especially have quite a dense sound and tend to subtly lift the lower-treble so they don't pair well with the Vega's already full and smooth tuning. The Azla tips open up the upper-midrange and provide a slightly more even bass and treble for an overall more balanced experience whilst retaining an inviting richness and strong coherence.
Even with the aftermarket tips, I still wouldn't recommend this to someone wanting a balanced or revealing earphone, the Dorado 2020 certainly offers more balance and definition, but it's a strong choice if you are averse to midrange thinness, rasp or sharpness and want a very well-structured and robust sound in a compact and super-premium shell. Enjoy the read and questions welcome!