This thread would be about a 1000x's more helpful if more than one person would post picks of their favorite throttle. As already stated, throttle preference is mostly a personal preference kind of thing so pictures would go a long ways to back up your opinions
I've always loved these cheap generic throttles that are available in the Lynn Vick or Western Power Sports Catalogs. They are inexpensive, they last a long time and the trigger is rounded and smooth. The worst thing about them is that they are so sloppy, they have about as much play up and down as they do back and forth, which actually turns out to be a good thing too.