For me this was a huge step back from a somewhat promising first entry.  The ideas in Invasion of the Daleks are pretty naturally expanded on in The Human Factor, but I found my interest in said ideas quickly diminishing.  It's cool seeing a different side of the Daleks and what a conquered race might look like suffering under their rule.  But the whole propoganda machine being run by Suz felt flat, the characters felt a little flat - I had to look up Suz's name which is never a good sign - and I just wasn't intrigued by the whole rebellion angle, either.  There's just nothing in the audio that really won me over.