I initially liked them, but grew to like the later uniforms better, which contradicts what I'm going to write below.
During the first or second season, a non-fan who had seen the show made an interesting comment. She said the uniforms were less "ostentatious" compared to the movie uniforms. That is certainly true, and I think it was an outgrowth of Roddenberry's futuristic ethos. Other than the pips, all ranks look essentially the same (putting the dress uniforms aside), and they were thus more egalitarian.
By contrast, although the subsequent uniforms looked more comfortable, the padded shoulders and raised collars were more pompous and egotistical.
So, I guess I like the later uniforms better from an abstract stylistic viewpoint, but less from a philosophical viewpoint.
Doug