Years ago I had a repair done by one of those two and it was badly done. Not only the repair itself it was bad but putting the violin back was done badly as well. I spoke with a couple of the really good players in Gauteng, including with one who has 2 very valuable violins. The consensus is that a valuable instrument can not be repaired locally. More than that there were some incidents
concerning theft / fraud I prefer not to discus on the forum. My violin is not extremely valuable but it is not cheap also. I like work to be done by somebody who properly trained in a reputable
and busy workshop and worked there for at least 5 years. Violin must be open, new bass bar and arch must be lifted, then neck angle checked. And after that a top notch setup. I can not take chances and I expect cosmetic to be imaculate.