I'm trying posting today with Blogjet. Seems to work pretty well. I do like the fact that it has What You See IS What You Get (WYSIWYG) display window and certainly more text formatting options than the standard Blogger posting interface. Also, my BlogThis! button on my Google Toolbar hasn't been working for a few days, and the BlogJetThis button seems to be working great, so that's certainly a plus for BlogJet.
Th biggst problm howevr is that there is no spel check funtion. Grrr. Not that Blogger's spell check is anything great, but it's better than nothing.