Supposedly the sr lighting will “see through” merky water/night time better than the spectral lighting and give a couple exra feet of visibility?? I really like the scout line units but they are BIG and HEAVY! 20lbs.!! The nice thing about the bigger monitors is the fact that you can adjust the screen. I decided not to buy a new one today because of the cumbersome feel. Not very practical if your on the move using a portable. I liked the SV and DT series, both have direction and temp, the DT also has depth. And they’re much lighter and compact at 14lbs. Their web site has everything a guy/gal needs to know.
BIRDDOG