Right, Animage.
I agree to a certain extent.
I personally feel that sticking with the Aviar and Shark is best. The Leopard only fills in as a "right now" driver for the holes that need a little more distance than he can get with his Shark. But it is easily the most appropriate driver he has.
I feel the Cyclone and Gazelle would be the best choices and the Cheetah is not far behind. These would be more appropriate for learning driver technique and still remain relevant as your power and technique increases; this is better than being a "right now" driver. But if you aren't pushing over 200' with the Shark then I don't think the Gazelle will do a whole lot for ya. The Leopard will serve decently as a driver if you have 200' of Shark power but it will become irrelevant as a straight driver as your power increases.
Ideally I would recommend working the Aviar to 250', the Shark to 300', and then add an X Cyclone.
But he has the Leopard right now so that's why I mentioned it.
The idea is not to romanticize these 3 molds anyway. The point is to learn everything you can from them and then add more/different molds as your skillset progresses... but be quick to learn and slow to add or change molds. Good disc skills can make a putter hold a hyzer for more than 300' in calm conditions. If you know how to work your discs that you already have you will be a better player than the guy who buys an Avenger SS for right doglegs, a Pred for left doglegs, a Teebird for straight holes, an XL for ess shots, a Boss for distance, etc. The Leopard will do all these shots and much more.