I just went through a lot of grief to trade in my 1-week-old Pod HD500 for the HD500X, because I was frustrated with the "DSP Limit Reached" message. So I get my new toy home, hook it up and open an existing patch. I added the PhD Motorway amp, went to FX and deleted an EQ and went to add Reverb and "DSP Limit Reached." What did they upgrade? I see ZERO difference so far!