The Den SMP is a fun, lore-filled, community-focused SMP with minimal plugins and no required mods. If you want a server that feels like a proper place to call home, this is the idea here: a relaxed survival world with a bit of structure, some story behind it, and a whitelist so the community stays tight-knit.
You'll find the basics that make SMP life easy too, like Factions, TPA, VeinMiner, voice chat, and WorldGuard. It sounds like a good fit if you want a mostly vanilla-style survival experience with a few helpful extras, plus some room for roleplay, raiding, and whatever drama naturally comes with factions.
If that sounds like your kind of thing, you'll need to get whitelisted first. Join up, get settled, and see what kind of story you want to build on the Den SMP.