Whatchew talkin' 'bout Willis????Personally I am not all that fond of the 486/488 series of ball heads from Manfrotto. They lack one major component in a good ball head being a separate friction control knob. Giottos makes some fine ball heads at a reasonable cost that will support as much weight as the 486 that has a separate friction control knob.
Another advantage to the Giottos is you can get all of their ball heads with out a QR plate, allowing you to choose the system you prefer. I personally like Arca-swiss format. It is however an expensive format as it is probably the most secure system on the market.
I would also suggest that you look at something a bit bigger than the 486. That is a mini-ball head. The 488 or midi size ball head is better suited for general all around use.