It's hard to really say considering the era and time in which they were made due to resources and so on.
80s movies - a slick look, slightly rubbery like overcooked octopus.
Berman era - more rubber than in that very special club my ex couldn't stop frequenting... mostly innovations on the design that started in TMP. Easily the most effective design up until a certain decade... but most of it's leather and rubber... and that highly contagious virus of which they speak because the great tribble hunt speeches got boring...
DSC - the most detailed, they also remind me of insects with pincers on their heads just waiting to attack. There's a greater authenticity and style than any combination preceding. They get my vote too.
TOS - whenever you need extra boot polish and enough spare material for a new wicker basket or two (because sci-fi was seen in a different way back then*), they'll be there.
* like a bunch of baby birds, they're cheap cheap cheap