Ok. So in your first post, the first antenna you linked to should work well for your local 700 and 800 MHz systems, probably even some stuff for King County to your north. But it won't work that well for aircraft, or VHF Marine, or your neighboring counties whose Public Safety comms are still on VHF or UHF. For those systems your second choice would work better, but that one won't likely pull in King County or Seattle 700/800 stuff very well. So as was mentioned in an earlier post, something broadband would be a good choice. But remember, if it's broadband, it will be a compromise. You can probably pick up Lewis County Sheriff just fine from your location with a VHF specific antenna, but maybe not with a broadband antenna, or maybe not well. See where I'm going here? There isn't one single antenna that will let you pick up everything you can.
That being said, a good place to start is a wideband antenna, and even better if you can mount it in an attic, or on your roof. The Discone mentioned in an earlier post would be a good choice. Keep in mind if you do an outdoor antenna install, and live near TV, or FM radio, or other powerful transmitters, their RF energy can de-sensitize your 536, making it seem deaf when it actually isn't, especially on VHF. Where I live I have to run a series of notch filters inline in order to eliminate that kind of interference. Once I added those my 536 worked like a champ when hooked up to my outdoor antenna.
Hope that helps.
