What is your favorite Starfleet uniform design out of the entire series? The uniforms of Star Trek's Federation Starfleet has been an interesting topic for me since some time ago. I would have to say that my favorite uniforms are the so-called "Monster Maroons," a.k.a. Star Trek II: The Wrath of Khan uniforms, continuing up to just a few years or so prior to Star Trek: The Next Generation. I like the maroon red jacket/coat colors to begin with, and the black trousers complete the look. They actually look quite formal, elegant, and sharp, in my opinion, which may be why the design appeals to me so much. My least favorite design however, would have to be the uniforms featured in Star Trek: The Motion Picture, as to me, they far too much resembled pyjamas, rather than uniforms of any sort. They were very... outlandish. Too stereotypically "futuristic," as in something from a B movie, no offence intended for those that believe it's a good design. Just my opinion.
I liked the red uniforms with the fancy rank pins and little clips.... but for me it's go to be the Dominion War uniforms.... the were imo of similar quality and style as the old red uniforms of the TOS movies, but had a bit more of a badass look to them.
Besides, during the whole TNG/DS9/Voyager era, all the bad guys and allies had cool looking uniforms/outfits (Borg/Romulans/Klingons/Cardassians) that made them all look a bit intimidating..... finally they brought in the Dominion War Uniforms and presto.... Starfleet looks like it got a pair and ain't gonna take no guff from nobody :P