First off, what ranges are you wanting to focus your monitoring on - 800 MHz, UHF, VHF, or some of all? Because scanners cover such a wide range of frequencies, there is no "perfect" antenna that will magically cover such a wide range with excellent results. Antennas will have certain ranges that they excel in, while giving varying levels of acceptable performance in other ranges, and poor performance in others. If you have a specific freq range you wish to focus on we can tailor our responses to your needs. If you "want to hear it all", then there is no definitive answer. But even in that case, we can certainly give you some advice. So let us know what you're looking to do and we will see what we can do for you.