Looks like I can get voting for my favorite G3 Pegasus of all time out of the way early, then. It's totally Star Catcher, she so beautiful and I love her design. I think it's the second version of her I like best, but I'll check and edit this at some point. I view her as the most beautiful pony in The Beautiful Generation.
I will admit, while I love (but don't own) the G3 toys, a lot of this comes from the cartoons. She's so beautifully designed in that, and I love how her voice sounded in her first appearance.