How do you like your strings? That may be a loaded question to ask a bassist, because there are a lot of factors that go into the answer. Maybe you have a favorite set of strings for each axe you own, for example, or maybe you like to swap in different strings for different kinds of performances. The best choice may even come down to the effects units you plan to use with them. All in all, the gist of it is that nobody but yourself can say which strings are right for you. What we can say with confidence is that, as long as your bass has 4 strings, the ideal set is waiting for you somewhere in this section's lineup of 4 string sets for electric bass.
It's not a stretch to say that strings have an even bigger impact on the bass than they do on the guitar - not only because of their sound, but also in the way they feel to play, since they're quite a bit bigger. Roundwound strings are the classic choice for bassists who want traditional performance, but you've also got your pick of flatwound strings like the GHS M3050 Precision Flatwound Bass Strings Medium or the DR Strings Flatwound Legend Bass Strings Medium. Or go for another option: coated strings, such as the Elixir Nanoweb Light Bass Strings, which will give you that smooth feeling while also protecting the strings and helping them to last longer on your bass.
Some instruments or personal tastes call for specialty strings, and you can find plenty of those here as well. If you like drop tuning, for example, check out the DR Strings Drop-Down Tuning Heavy Bass Strings. Looking for something aimed squarely at jazz on a long-scale bass? The Thomastik JF344 Flatwound Long Scale 4-String Jazz Bass Strings could be right up your alley. Or, if you want a set of strings like no other, how about the Dean Markley 2672 Blue Steel Cryogenic Light Bass Strings - their liquid nitrogen treatment gives them outstanding lifespan and tone.
With so many 4 string sets for electric bass to choose from, it doesn't matter what you're looking for, because there's definitely a set here that can provide it. Coated, uncoated, light, heavy, short-scale or long-scale: it all comes down to what works best for you and your personal playing style. If you're still looking for that perfect set of strings, don't be afraid to try out a few different options to see which ones end up being the best fit - you'll be glad that you took the time to do it.