+1 on SIT Silencers. They're a compression wound string most comparable to GHS Pressurewounds. I've tried (and liked) both, but preferred the Silencers. I'm the anomaly on TalkBass since most preferred the Pressurewounds. I can't necessarily explain why. I just preferred their tone and the way they felt under my fingers.
I also remember trying Ken Smith Compressors many years ago and not liking them at all and almost immediately switching back to a set of Silencers.
You might also want to try something like DR Sunbeams or DR Pure Blues. They're excellent strings that seem like they might work for you. If you're looking for a silky smooth nickel roundwound that has that kinda broken-in feel/tone from the off, those are worth considering.
(I will say that neither Sunbeams nor Pure Blues completely worked for me. Sunbeams had a smooth plush texture, but were too spongy under my fingers for my tastes in terms of stiffness/flexibility. Pure Blues were a little stiffer, felt great and sounded amazing. However, in my experience, although Pure Blues held their killer tone for several months, they then died very suddenly. No gradual loss, we're talking great one day then the next it was like Wile E. Coyote falling off the cliff).