I never realised there were so many variants of Spider-man but after seeing the above customs I would love to see them all. The versions displayed above are as follows;

Back row (l to r) Alex Ross movie Spidey suit concept; repro Circle suit Spidey; Symbiote Spidey.
Middle row (l to r) 1967 animated; Spider-Man Unlimited
Front row (l to r) Ben Reilley; 2099; “What if (#1) Spidey joined the Fantastic Four?” costume

Head over to the Mego Museum forum post to see more ideas for different Spider Man variants.