I ended up using WordPress and had a full-featured Blog up in about an hour (via a SimpleScripts install at Bluehost.com). Added plugins for Dropshadow, Amazon links, and Mollom, set the options I wanted, then got an acceptable style by modifiying the default Theme in another hour or so.
There were a lot of times I felt like I was trying to type with mittens on when things I tried to do would have been trivially easy with MODx, but I have to give WP credit on the total time it took. I couldn’t have done it in MODx in less than a week (pings, trackbacks, Mollom, and Amazon links alone would have taken days instead of minutes.
I’m still wrestling with WP 2.7’s "intelligent" header image and "dynamic" sidebar. I was also quite appalled by the default Kubrick Theme for WP, which has been around forever, but has completely different elements all styled with just <small> tags and all in the same div. I ended up hacking the core (I think) to give them different classes. And the default CSS file is a mess, with the same classes appearing multiple times in widely different places in the file and tons of characteristics inherited from things that have no relation to them. I hate to think how long it would have taken without Firebug.
I’ll post the link here when I’m finished noodling.
Thanks for all the advice.