"NOTE:A piece of equipment that has a higher maximum output voltage is not necessarily going to sound better than one which is only capable of 2 volts output." Thats Good to Know. With that in mind... I can get two different head units both same price one pionner one eclipse. The eclipse hsa more pre out voltage but its RMS output is 18x4 the pioneer has less pre out voltage but more RMS (22x4). With that said which do you think is better to go with. Thanks for all your help!
It's going to be a pretty close call and everyone is going to have their own opiinion. Since you'll be hard pressed to hear much of a difference, your best bet is to try and go play around with both decks. The user interface is often overlooked and can be very important in choosing a deck. I also personally prefer the look of Pioneer decks over Eclipse and would look into the Premier line if I needed a new HU.
It would also be helpful to know what Pioneer and Eclipse decks you're looking at in the same price range.