G4/G5 all the way. I’ve poured thousands into Uniden, Whistler, many antennas, home made antennas, etc. Its all about your location and in my location (dead center of two very close towers), the Unication blows the doors off of everything. It’s not a scanner so, make sure you understand it’s pros and cons. But for me scanning our local P25 system, it’s just phenomenal. I’ve been battling the simulcast thing for years so I was practically begging Unication to take my money. #ProblemSolved