If you can live without great code formatting support and you don't mind paying for it, then I really can't recommend Squarespace highly enough.
I fancied blogging, but I already have so many god-damn side projects on the go (my eternal problem is too much started - too little finished) that the last thing I want to do is keep a linux vps and a Wordpress installation up-to-date and configured securely.
With squarespace I think I pay $16 a month (less actually as discount codes are in healthy supply online) instead of $5 for, say, a vps on DigitalOcean, but I get my pick from a set of nice responsive template designs, unlimited traffic (in case I ever write something that gets HN'd) and a drag and drop interface that most of the time exactly meets my needs. They do all the updating of the back end for me and I can just write. I can inject code and other stuff onto the page if I need to, but I've kind of come to the realisation that I don't need most of that bumf anyway.
I did just have a look at the in-post code writing tool out of interest: It has HTML, CSS and Javascript formatting, which isn't much help if you do most of your work in c# like I do, but then I'm sure I'll survive. Their customer service is why I'm so damn enthusiastic about them, so no doubt if I REALLY feel I need it I could just email them and request it.
Reading this back sounds like I work in their marketing department. I promise I don't, I just really think you should check them out.
I can second this, I moved over from WordPress because it was so buggy (add on's didn't always work as promised). No regrets with squarespace - the site looks professional and I don't have to spend any time updating/maintaining it. Of course, this comes at the cost of learning but...
