Hello, I am a new subscriber and would appreciate any help that someone familiar with the Bel product line could offer. After much research I replaced my old 8500 with a new STi driver, the product was manufactured 1610. I live in the central valley of California and have been testing the STi on the CHP in my area. The range on KA band that I'm getting does not differ much from my 8500. I am getting a new V995 this week to test and I don't expect there to be much of a difference. Is there something that I'm missing? Is the m3 platform that much better than the m4? Will I notice a difference with I/O? or is the extra money just for the stealth? Any thoughts would be greatly appreciated.