Indoor growing: humidifier vs humidity trays?

[orchidsarefun]

I grow on racks and I have both.
My trays are boot trays - shallow and wide that fit underneath the racks.......and I know they work because they dry out so quickly. They also catch dripping water after watering, so they are multi-purpose....
Initially I had the humidifiers near the orchids, objective was to raise humidity levels in the room. However I noticed that the roots really responded - more green - after I moved them closer. In fact I have an Odontonia that gets root misted 2x per day and loves it ! ( has lots of hanging roots )
I don't have any fans, don't need them.