xD I just installed PCManFM about thirty minutes ago, and I actually do like it. I haven't switched completely from Thunar yet, though.
I was looking for alternatives to Terminal, and I tried out Sakura but I didn't really like it... >_<
...and I take that back. *just gave sakura another try pahaha* Only issue I have is that the transparency doesn't work properly, but that doesn't matter. Now to set one of my desktops to a full-screen sakura.
I'm trying to avoid QT, so instead of having VLC I tried mplayer (I still have it). It keeps crashing on me when I try to replay something, and just other minor annoyances make me want to go back to VLC. Hahaha :]
But then, I'm using VirtualBox, so I do have QT4. >_< I don't need to use VirtualBox anymore, though, so I may get rid of it.
What major differences do you see between PekWM and Openbox?
I like the volume management that Thunar has, though my NTFS drive isn't quite working right with it (I suppose I should probably move that drive to FAT32 or something soon)
Sakura does have a few short comings compared to Terminal, like the inability to close a tab without the mouse or that you can't turn off bold fonts, but it's quite nice if you can get past those. To this day though, it erks me that I can't close my tabs with a CTRL+W or similar.
If you're keeping onto VirtualBox, check out gvbox. It's a GTK frontend for the commandline vbox commands. It's pretty nice, if you don't need a lot out of VirtualBox.
Between Pekwm and Openbox, I see mostly increased customizability in Pekwm and some overall novel features. For instance, the way pekwm uses the screen edges is nice. It has it's downfalls too, but it's really nice- provided you can get through the initial customization phase.