I've always had an interest in how the hero looks. Be interesting to see which you prefer. See where there's consensus and disagreements. Here's mine:
Spider-Man: No Way Home (2021). My #1 Spider-Man suit.
Captain America: Civil War (2016) behind the scenes. Really wish this was the final version instead of the one that was used.
The Amazing Spider-Man 2 (2014). Awful film. Great Spidey suit.
Honourable mention to the traditional red and blue from Spider-Man (2002), Spider-Man 2 (2004) and Spider-Man 3 (2007).