Both guns are great, however the Spyders have some styling problems, it looks pieced together, not really smooth looking like the piranhas or the tippmans. I suppose this doesn't really matter, as long as you can hand somebody their own ass in the field.
About the only thing I don't like about the tippman is the length. Put a 14 inch barrel on that thing, and you have one long gun! Either way you go, your going to get a good gun, and neither one "Sucks", at least in my opinion.