I, too, love both my Macs. Right click with the track pad and two fingers is great. Or use the Mac mouse that is smart enough to know that if you click the left side of it, it knows that is a left click and if you click the right side of it, it knows that is a right click. Nice.
I found Aperture to be not much more functional than iPhoto, as far as editing. Aperture is a photo sorter. It is for professionals who need to sort through 50 photos on the same subject to find the best shot. If you do buy it, (download a free trail version first, to test drive it) it can be purchased much more cheaply at places like
Amazon.com, than at the official
Apple store.
iPhoto is great for general use. As a hobbyist, I'd stick with iPhoto or PhotoShop Elements. PhotoShop CS3 is amazing, but costly and complicated to use for general users. But, if you can fly a 747, CS3 is certainly within range of the learning curve!
For more info, check out:
KenRockwell.com