In my opinion, Heather Armbrust is just about in a class of her own. Otherworldly quads and glutes and she still manages to maintain great symmetry with the rest of her physique. Totally amazing 17 inch biceps too! She's damn sexy as hell and (IMHO) Alina is about the only one who can hang with her on stage.
Also... Danielle Gardner is going to be another one to beat, She's definitely the biggest short chick out there, and she wants to grow more which is the best damn thing ever! Her legs are absolutely amazing, and her whole body is just about perfect, but her calves are SOOOO big that they overshadow her quads noticeably. If she'll just build those thighs some she'll be the perfect fireplug of muscle!
Finally... since I'm a vintage king of guy, I propose a blast from the past. From back when I started really getting into muscle babes... I suggest to you Denise Rutkowski! IMHO one of the most perfect female physiques ever to grace the pages of a magazine. She was the combined epitome of sexy muscle goddess, femininity, and total hotness! WISH she was still around!!!
1st) Heather Armbrust
2nd) Alina Popa
3rd) Danielle Gardner
4th (Honorable Mention) Denise Rutkowski