Drew,
Welcome to the forum. Pretty much what would have wanted to share, Croc already nailed down to a T. I currently own a Stalker (we jokingly refer to them as Storkers here on the forum) and am a former Birkin owner. The Stalker, while it kind of travels to the beat of its own drum in the ‘looks’ department when compared to a Caterham (my personal favorite) or a Birkin, does have a bit of a ‘parts availability’ advantage when it comes to building, maintenance, repair, etc. when compared to some of the other makes. However, they are all excellent cars in their own right and I would urge you to get what it is that YOU want in a 7.
To echo the words of wemtd, I would absolutely suggest that you attend the USA7’s group at NJMP in July. The event is a blast and the various cars that show up will give you food for thought on what direction to channel your interest in these cars. I went last year and only wish I could be there again this year.
You asked if it is quite an irrational obsession………I’d say only for those who are without passions in their lives.
Cheers! :cheers: