I've been using DR Nickel LO-RIDER
60 80 100 120 for D Standard on my 2007 Warwick Corvette Taranis . Really good tension. Smooth as silk. Loud low midrange
That's the bottom four strings of the light 5-string set tuned UP three semi-tones (BEAD to DGCF)... You like them nice and tight, don't you?