I have used many scanners over the years, conventional, analog and digital trunked, handheld and base, Uniden, GRE, & RS but the idea of a scanner on my laptop is something I haven't ventured into but the idea is interesting. I read the wiki page on here about SDR, and a few posts but im still lost. I have heard that SDR is less prone to simulcast issues, is this true? I would mainly be wanting to monitor Phase 1 & 2 P25 systems (no NXDN, DMR, or Provoice). From what I read I would need two dongles to monitor trunked systems? Is there any specific brands that are good vs others, or ones to stay away from that have issues? I am not needing to record any radio traffic or stream at this time, just monitor live radio traffic. Program recommendations for a cheap budget?