The quick release (QR) plate on my Vanguard SBH-100 ball head is not Acra Swiss compatible, hence I need to replace it as I have standardised all my gear to use Acra Swiss. Initially I was hoping I could just swap out the QR clamp and replace it with, say, a Sunwayfoto panning tripod clamp, but alas it was so tightly screwed on that I could not unscrew it. Hence I was left with no choice but to buy a new ball head to replace it.
Among many requirements, one thing I wanted to ensure is that the diameter of the new ball head and existing tripod match. I simply brought along the SBH-100 to my favourite camera shop and asked the sales person, who suggested Sirui K-30X. Although its maximum load of 30kg is way overkill, it's only 50g heavier than SBH-100, which can carry only up to 10kg. So I guess it's a no-brainer to buy K-30X. I have used it a few times since purchase and happy to report no problem so far.