Yep.  Have always used a backpack and 3700 boxes.

Switched to tackle bags about 15 yrs ago & haven't looked back. Most modern tackle bags offer a much better system for organizing tackle. 

I totally agree. I bought a few Flambeau boxes and now I just throw them in a normal backpack and walk anywhere I want. Keeps my hands free all the time and much easier to carry. 

Went a small soft sided tackle box many many years ago.  Then upgraded size twice and capped out with the biggest blasted Tackle bag you've ever seen.  It was insane.  

 

Scaled back to a moderate size tackle bag for boat fishing.  

 

When in the kayak I have one 3700 size waterproof tray and a BPS tackle binder.  Both have 95% more crap than I need or will use for any given outing.  Typically I could get away with packing the stuff I actually need in a cigar box and calling it good.

pretty sure almost everyone here uses trays i fit 6 of them into an under armor gym bag and 3 more with almost all of my soft plastics in a shimano tackle bag 

I wear a vest and stuff the pockets with small boxes . I carry one combo so all the lures must fit into that rating .