When I do bench press I have never been sore the next day in my chest but when I do dumbbell bench I actually get sore there. I know soreness isn't necessary for progression but at least it tells me that I'm working the muscle. So I'm wondering if it's alright if I change my routine from benching with barbells and dumbbells each once a week, to dumbbells twice a week instead. I'm mostly looking for more muscle mass, not necessarily strength increases in my training.
Also if I do a 5x5 for barbell bench press and move over to DB press and wanted to do more reps per set, would a 4x6-8 suffice?