Great article.
I'm a Signature Series collector myself, I just got into foreign variants in the last year or so. The reason being, I want to build a collection of comics that no one else can duplicate. There are so many collections out there that contain books like Hulk 181, Spidey 121 & 122 / 12 etc. even SS copies. I've taken it a step further by narrowing my focus to mainly SS foreign editions. I won't be able to get them all done due to cash flow but here's a few I've got so far.
Sorry about the large pics, I don't currently have those two uploaded to photobucket.
I've got a bunch more raw foreign stuff that I'll post pics of when I get a chance.