The most popular hame band?
The VHF / UHF
bands 2 meter is usually the most popular but 440 mhz and 6 meter does have a fair bit of action depending on the area you are in,but these bands are normally non DX bands,local area only...usually...On occasion they will have openings that allows contacts from 200 to 1000 miles,but this dont happen often or hold for long periods HF
bands...below 30 MHZ,is a horse of a different color
That depends on the time of day,and band conditions at the given time ..not to mention just how much the sunspot cycle is effecting the ionsphere.
Some bands are open at night and some are open during the day ,and for now some are not open at all or open for just a few hours or minutes
But for a general idea usually 160, 80,40 and 20 are a good starting point 17,15 ,12,and 10 now do have openings but those are not on a regular basis...but just give it another year or two and you will start seeing that all the bands will be open at some point over the day
But from what I have been hearing for now 80 and 40 are good bands to be scanning for contacts