Gah I'm glad this isn't a sports forum - there'd be balls everywhere
As for tripod heads I think its important to know what kind of work you will be doing, some heads are better than others for specific purposes and others are useless for others.
My views:
Geared heads - are fantastic for macro work; allowing you very fine controls in each of the 3 axis of movement without having to release the pressure from supporting the setup. They also don't suffer droop or shifting of the position either (common problems with many ball heads in macro work).
They are also good for landscape, buildings and any scene where you've time to setup your tripod and camera and where you don't have to track any motion.
They are hopeless for moving subjects however, since you can't release the pressure on any axis without having your hand on the pressure release the whole time - and even each pressure release only works for one axis so you are limited to one angle of motion.
Ballheads - about the most well rounded (see I make jokes too!!......what it not that bad!!) head type; allowing freeform control over the positioning of the camera. Upper level heads will even have built in panning bases (or these can be added separately) to aid in panning shots when you only want side to side motion. For most applications they won't show any drooping at all (I've only ever seen it with 1:1 magnification macro) and the upper range ones will, again, offer a more secure and strong hold. They have option that can support even exceptionally heavy lens and camera setups as well.
3-way heads - a little slower than your ballhead, but still able to quickly position the camera how you want it. Great for studio or landscape work; though a little less ideal for motion tracking (but not impossible, just not as easily controlled as a ballhead).
Gimbal - these are specialist heads for heavy telephoto setups (your 300mm f2.8 and longer) which allow for balancing of the setup around the centre of gravity. Thus allowing secure and easy repositioning and motion. These are almost the only heads suitable for this kind of work where you have lenses far in excess the weight of the camera; whilst other heads can do well (and there are one or two hybrid gimbal ballheads out there) these are the ideal choice.
In the end its all about choosing the right head for the right situation; ballheads being good generalists for most fields, whilst the others being more specific toward select areas of interest.