Vega China is indeed a very good rubber. I played with it for a while and wrote a long review about it a few months ago. It is veeeery spin and easy to use at the same time. Even more spinny than modern, highly priced tension rubbers. It is also a great replacement for h3n, with similar characteristics. Also, no boosting needed, solid durability, and cheap price. Biggest difference to H3 are flat hitting and blocking, because vega china has alot more catapult, something you need to get used to. Also, brushing is a bit better with h3. For reference, I played for a while with Vega China on AJH TMXi Pro and old version of Hugo HAL and it has great feeling + is a spin monster
Vega China + on the other hand feels very different to regular Vega China. no softness, just a dead brick. so so difficult to create spin with the VC+, atleast for me. I think that rubber needs to be boosted, otherwise its of no use for most regular club players. regular VC is cheaper and much better. VC just in general a very underrated rubber, it can easily compete with the newest hybrid rubbers, it has the same spin as the modern hybrid rubbers, and it lasts longer. only thing you lose is some dynamics, because VC leans more towards h3, while modern hybrids are alot more springy