First, my apologies if this has been addressed elsewhere; I could see no reference to it. I am considering a new Pro 651 or WS 1040. I see the comparisons made on the Radio Shack descriptions for each, the Whistler website, and the Scanner Master website comparing the two. They seem to indicate they are essentially identical, in the way the GRE and RS versions of the 106 were. But looking at the specifications, one can see different freq coverage. Even the Scanner Master describes the WS1040 as having a speaker located at the top [their photo does not, though], as the GRE model did, as opposed to the Pro 651's being mounted at the bottom of the unit, as the Pro 106 did. So my question - is there a significant difference btwn the 2 models and is one worth considering over the other? Scanner Master has them both offered w/ the WS 1040 being $50 more. Scanning in Maryland, to the extent that matters. Thanks for any help.