> So can you recommend a lighweight, fast and elegant window manager
> for my SS5?

I dunno about about elegant but I'm rather partial to WMX. It's another
minimalist WM w/ vertual desktops and configurable pop-up menu but no
icons. Based on the even more minimalist WM2. Both are in pkgsrc.
I've run both on Sparcs as old as the 1+.