"what makes them so special?": From what I know is what makes those hoodies so special is that SP5DER hoodies are a really big name in streetwear mostly because it's owned by Young Thug who is a famous rapper. A lot of other celebrities have worn these hoodies too.
"Do the limited-edition drops and collaborations add to their exclusivity?":Yes
"How does SP5DER compare to other trendy brands in terms of style and comfort?":SP5DER hoodies have loud, bold, urban, and expressive designs. These hoodies are also mostly worn by rappers and people who are into rap music. But to me I think people mostly wear these hoodies because of its designs and because its owned by an influential rapper.
"If you own one, what stands out to you the most?":Ngl I wish I owned one but one of my friend's do and he says they are very comfortable but yeah I've always wanted these hoodies. A lot of the limited-edition drops have really nice designs .
Also that website you just linked is not the real sp5der website. Here is the real website https://kingspider.co/.