GHS roundcore bass boomers vs DR sunbeams

I got interested in roundcore rounds since I kinda like the more mellow sound but I don't really enjoy the always dead sound of flats. I also heard roundcores felt more flexible or balanced tension wise and that's very appealing to me. So does any one of you have experience with any of these strings? How would you describe their sound vs a hexcore for example? And considering I play med gauge (45-105) could I go a gauge up for a bit higher tension and better low end clarity?