I would like to get a ballhead for my monopod GM5540 I have a RRS QR clamp on there right now for MarkII & 300 f2.8 IS with 1.4x.+ 2.x
A ballheads seems more convenient to me. I am looking at
Acratech AZ long lens head
Acratech GV2
would that be a good choice???
Renate

