went same wayI had a FL-8, 18 and now a 28. The 18 was a huge improvement over the 8: brighter, zoom.
The 28 is only moderately better than the 18: night mode, digital depth
I am not aware of big improvements between the 30 and 28
even when you cycle through the various frequencies?I’ve found when fishing with a bunch of people close to each other and a hard rocky bottom the 28s and 30s do a way better job than my 18 and 20 when it comes to interference.