I finally pulled the trigger on switching to BlogEngine.NET. I tweaked it a bit to maintain all of my old blog post links and probably lost a few links here and there but the switch is made. I'm going to run with this for a few days and see how I like it.
Please let me know if you notice anything weird. Btw, if you see any $g(...) macros those were previously Google search links under dasblog which aren't supported here.
One of the major things I hope this will resolve is the issue of dasBlog losing comments.
[Updated: Nov 24, 2009] I've since added the macro functionality found in dasBlog to BlogEngine.NET so the above problem has been resolved.