Well, it's worth to buy them again IMO. I don't mean to go off tangent on this deal thread but spending a little time discussing the features and qualities of a product may help us to determine if a deal is worth it.
I think the isolation of the IE80 is dependent on whether you can get a good seal. I am using the Monster Turbine tips and they can block out pretty much all of the background noise in an office environment. Although the best isolation I have had was the SE215 with foam tips. They can block out everything, 100%.
Speaking of SE215, does anyone know of any good deals for the SE215 special edition (the blue one)? Thanks.