Unusually, I have to disagree with Chris. I do notice when strings are more or less compliant (or floppy, if you prefer) and I really hate a floppy low B.
On my Thunderbird (Mike Lull T5) I have a 4-string set of LaBella plus a low B by GHS which feels rather tauter. It means four of my skills are red and one is black, but at least I never pick up someone else's T5 at the end of a gig ...