I began B&W darkroom work with trays, and I've done a grand total of one B&W print in a drum. (I wanted a sample of a print done with a particular developer, but I only had about 250ml of that developer on hand, so a tray was out of the question.)
For color, I began by using drums because that's what all the books and manuals and whatnot recommended; however, I found it to be a pain -- drums need washing and drying between prints, and I had some early problems with green streaks on my prints because of incomplete drying. (I suspect little drops of water clung in the lid and then dripped down.) Thus, I became obsessive about drying my drums, and the end result of all of this was that it took much longer to do a color print than a B&W print.
For my latest color session (a week or two ago), I tried tray processing. I did this in total darkness until the print was in the blix, which was a bit awkward, and the odor from the trays was stronger than when I used a drum. OTOH, the overall speed of the process was much better. Overall, I preferred the tray processing, and I intend to use that method again the next time I do color prints.
That said, I suspect drums would have an advantage for larger-than-normal prints. I normally process 8x10 and smaller prints, so I keep chemistry on hand in quantities that are suitable for this size. To do an 11x14, I'd need to use larger trays (which I have) and mix up larger quantities of chemistry. To do an 11x14 in a drum (which I have), I could use less chemistry than I use for my 8x10 prints. The chemistry would exhaust much faster, of course, but at least I wouldn't need to mix up larger quantities of it. This is largely speculative, though; I've not wanted to make an 11x14 B&W print since beginning color printing.