Giottos MH5001 3-Way Head, £45
This 3-way head has the same 60mm diameter size of mounting plate as the Giottos ball head, but a reduced load rating of 6kg. It still feels extremely stable and well built, with smooth movement in all three directions of adjustment. Bubble levels are fitted to the base and platform, for levelling the tripod and camera.
Induro BHD1 Ball Head, £160
It's a pricey head but has a hefty 12kg maximum load rating, despite weighing only 500g, and attaches to tripods via a 60mm mounting plate. Features are plentiful, including an adjustable friction damper and panning lock, with calibrated scale. Build quality is excellent and it's an extremely solid head.
Manfrotto 498RC2 Midi Ball Head, £80
With a 60mm mounting plate and chunky build, the Manfrotto Midi ball head feels stronger than its 8kg load rating would suggest. It's absolutely solid in operation and refinements include an adjustable friction damper, panning lock and calibrated rotation scale. It's beautifully crafted and the only thing lacking is a bubble level.
Manfrotto 804RC2 3-Way Head, £55
This 3-way head has a 60mm mounting plate but the lowest load rating in the group, at 4kg. It's nevertheless a robust head with Manfrotto's usual (and very good) 200PL quick-release plate. There's a bubble level on the camera platform and calibrated scales for all adjustments. Rigidity is good but adjustments can feel a little jerky.