I've suffered with Blogger for years, while competitors waxed and waned. Blogger is getting more tolerable, but WordPress is the fashionable place these days. I opened an account and played with it a bit. It doesn't have much more Safari support than Blogger, but it's a strong competitor for Firefox clients and I think it has a more stable API than Blogger. I was very impressed by the import/export facilities, WordPress is not afraid to let their customers free.
I'll keep playing with it, though if Blogger improves their BlogThis! client I'll probably stay with Blogger.