I'm really liking my Swedish razors, but that also has to do with the fact that they make up half of my shave-ready rotation. At the moment I'm really digging my Heljestrand M***K No.31 (very full hollow, smaller sister to the MK32), but the No.23 (quarter hollow) is a great one as well, just like my 5/8 Törnblom rattler/faux frameback. My Söderén frameback is a bit aggressive for my taste, but maybe it just needs some tweaking on the stones.
All in all Swedish blades are quite hard, which means they take a bit longer to hone than, lets say, a vintage Sheffield, but they hold the edge well. Swedish steel also takes a great edge, the fact that many (vintage?) Japanese razors and more recently manufactured kamisori's are forged using Swedish steel is rather illustrative I think.
But then again I have no idea about how the qualities of vintage Swedish steel and modern Swedish steel compare, and exactly what kind of steel is used by whom. But there has to be something about it.
I've been considering getting a Japanese straight at some point, although I'm not sure how they would compare against Swedish straights, being the same(?) steel and all. But I digress.
@Karl: If you are choosing between a TI and Revisor I'd go for a revisor, since from what I've seen they're more affordable and I was never too hot on the TI designs. I guess most of it boils down to aesthetic preferences, like Paul said. Most razors that are in production are great from what I've heard, vintage a better value for money. Unless you're aiming for a high-end (read highly coveted, such as Bartmanns and Globusmen and what-have-you-not) NOS, with £100 to spend you'd be going for the 'cheaper' NOS straights, e.g. on the revisor rarities page. Lovely selection there, I have to agree. If I felt the need to do some serious razor shopping, that's where I'd look.