I know that this is an older post, but I had to weigh in. I have had an lx3 tc and fished many many times with it. I did love the unit but I found issues with interference when other flashers were around and in deep water. I bought a lx5 and it is life changing. Intereference was almost nil as well as line seperation, fine line technology and amazing abillity to read small jigs in 60 feet of water. I couldn’t be happier with my purchase, buddy w brand new fl18 had a snow storm on the scree. He said he should have bought a marcum