I read some posts where people were saying they have traded-in/wanted to trade-in for a higher end model, is this true? I was looking on possibly trading in my Pro-78 for a Pro-78 SE and was willing to pay the difference between them. I looked on Whistler's site but did not find any information on this so I thought I'd ask here, by the way I was trying to find Whistlers contact number but was unable to. Is the only way to contact them via live chat (which is offline right now) and email? If there is a number may I please have it? Thanks.