Sergio Oliva's physique would be my first choice.
I also like the way some like Mike Francois and Dennis Newman looked in the early to mid 90's. I have a similar structure and overall look to Francois (short with big legs & back, thick chest, etc), although I've obviously never been anywhere NEAR that impressive by a long stretch.
Wheeler and Don Long also looked great, as did Dillett and Strydom from the front. Coleman looked great before he got TOO big.
Guys in general started to look worse overall IMO in the mid to late 90's when the SEO and the bloat and big bellies started to emerge. Guys like Dorian, Nasser, and Fux were awesome, but not something I wanted to look like.