IMO, most Spider morphs are way overrated. I prefer the Spider in it's original beauty. That being said, my favorite morph is the Spider Albino, which I think it's because the Albino genetics don't effect the pattern of the Spider.
But, to each their own. Everyone has varied opinions. I do think you get what you pay for though. If you want an ugly, browned out Bumblebee, pay a meager amount. If you want a Bumblebee that retains some of it's vibrant colors, get ready to dig into your bank account.