Precision Rifle Gear Best ballhead that isn't an Anvil30?

Assuming you're after the same style of head:

Ebay has Leofoto Ma-30 (or better yet the ma-30L)

General internet offers Sunwayfoto IB-30 (have no experience with this one)
 
I went with this unit from Sunwayfoto.

IB-65-_-1_400x[1].jpg


I tend to go for things that are over engineered. Load capacity on this unit is 66 lbs. and handles Arca and Picatinny with a throw lever clamp.

I run it on a Leofoto SO tripod. Your tripod will need to accept 75mm bowl fittings.