GHS are bass string perfection. I used to be a DR man, but I've now converted to GHS exclusively. I use GHS roundcore boomers on my jazz bass, balanced nickels on my p bass, and pressurewounds on my Stingray V. I also now keep a backup set of precision flats in my drawer incase I want that thumpier flat sound from my p bass.
I tell you, every single stringset is the perfect fit for those basses. Seriously why has it taken me this long to discover these strings?
Dude, when it comes to quality and feel, no one is on the same level as GHS. Tone is subjective, but to me, there's a certain quality in their strings, like the final touch, that takes them from a really good string to the perfect string, when comparing with other brands. This is in my personal experience, and in my taste, so not everyone will agree with me there. However, there is no denying that GHS are the best when it comes to quality and innovation.
With GHS, I find their catalogue has a string for everyone, whether you're after a thumpy Motown sound, a mellow roundwound sound, a bright grindy sound.
All that said... for what you want I have to suggest DR sunbeams

They have a sweet top end, not too bright, but I personally prefer them once they are old. They also have a nice crisp bass, fairly deep sounding, but they also have this thing going on in the midrange that's quite unique, very very nice sound, that brings out this phenomenal growl, especially if you've got a jazz bass or even something with soapbars. The highlights of this string, besides tone, is #1 the flexibility. These are by far the most smoothest and flexible roundwound (to some, a bit too floppy) but give them a go and see what you think. #2 they last a long time. I had my set on for about a year, or just over, and they still were plenty bright. It's not that they were ridiculously bright to start with, but they just got to a certain point and retained the same tone for ages. I've taken them off now cos I switched to GHS, but they probably still sound the same to this day.
Anyway, hope this helps.