Marine Radar
All RADARs work well in good weather!!! The maximum radar range is determined by target height, output power and antenna length. The higher the value the better the performance. So in bad weather if my antenna is longer and my output power is higher than yours, I should get better range than you.
For a complete technical explanation of radar technology, the components of a radar and a great summary of the basics, see RADARtutorial
Garmin GMR18xHD Radar
RRP: $3,199.00
NOW: $2,979.00
Garmin GMR24xHD Radar
RRP: $4,599.00
NOW: $4,341.50
Raymarine Quantum Q24C Radome Wi-Fi Radar
From: RRP $3,399.00
$3,044.50
Raymarine Quantum 2 CHIRP Radar
RRP: $4,499.00
NOW: $4,129.00