Best bang for the buck is the Promaster SPCH20Cine head. It's Arca Swiss and has a 1 year no fault warranty that we extend to lifetime for forum members.
Here is the link to see it. It's normally $89.99 but members here only pay $74.99
https://cameralandny.com/products.html?catalog[search][text]=spch20&catalog[sort][on]=relevance&x=0&y=0
Resurrecting your question as I'm looking at the same one.What would be the pros and cons of the Benro S2 vs the Promaster SPCH20C, aside from price?
Does the image shift when you lock in the Promaster? Any chance you could elaborate on the advantages you get for taking on the extra 3 oz over the Benro? I'm willing to bet other members would love to know as well.The weight is 14.25 ounces