I am BRAND NEW to this...and have what are probably some very simple questions. I'm looking at a Pioneer 450 or Pioneer 550 DVD Recorder. I want to be able to play DVD's, record on to DVD's (to be played on other machines) and use the PVR function for taping. Does this machine do it? We are using a Starchoice Satellite HD box with this TV. Will it be easy to set it to record or is this going to cause me migraines? Also, what are the differences between all the DVDs?