I have recently purchased a BCD536HP and am not real satisfied with my P25 reception. That was the primary reason for my purchase. I'm seeing very little of any improvement over my GRE PSR500. I've heard that the SDS200 eliminates the simulcast breakup I'm getting. Are there any of you out there that have moved up from the 536 to the 200? I realize the significant price differential but willing to bite the bullet if the performance is there. I have tried all kinds of iterations of threshold values in manual mode with no real difference and in auto mode threshold bounces all over the place with limited effect on the reception break up. I live in Jackson county MI in case anyone knows of any cause of poor reception. I have a BCD436HP handheld arriving tomorrow. Will be interested to see how it performs. Meanwhile I'll likely return the 536.