Getting ready to buy a predator but cant decide if I should buy one used from a forum member or brand new from a website. Marylandspeed has a nice package deal with the interface kit and a 180 t-stat for 334.95 shipped. Forum members predators run used from about $250-$310 with no t-stat. So are there any advantages buying one brand new or should I just get one used? Thanks in advance!