SherlockHolmeboy said:
If your looking for something official, use Waninkoko's USB Loader 1.5
If your looking for high compatability, use NeoGamma
If your looking for something stylish, use Coverfloader
If your looking for a skinnable loader, use Configurable USB Loader
I was in your boat a few weeks ago, and understand the confusion. There are a lot of videos of the loaders in action, and either load them all up, or watch all the vids they help greatly.
I agree with everything Sherlock said...
Floader takes a while to load, but its really slick. 1 browsible row at a time, game must be centered for you to click on it. Flipping over the 3d cover (back view) has a nice animation, but instead of flipping it, it rotates it behind and farther away.
Configurable has the has a much faster load time, and you can show like 30 games on the screen at once and is wii finger browsible. Go from A to Z in less than 2 seconds. If you like point and click, this one rules. Images arent as high res.
Neogamma USB loader GX - Works and has everything an average user is looking for. It broke me into the this world. This puppy is versataile, and has TONS of user customized skins to download.
Wanikoko's - Brilliant guy. I havent used his loader, but have seen it work. Very basic but heard great things about it.