I've been experimenting with round rounds and really enjoy the DR Pure Blues nickel rounds medium light gauge. However, they seem to be a little floppy (loose), causing me to have to raise the action higher than I would like in order to avoid fret noise. This is partly due to my technique but still, I would rather have something a little higher tension without going into the hex cores which I find to be dead sounding. I have not tried the DR Sunbeams yet but have heard good things. Thanks.