i dont use OBSE so i wouldn't know how good is v3 of TSS?
Sheppard
Shame on you!

Just kidding.
It's pretty good, I think. I use it quite a lot, I make friends with many of the NPCs, and I can then look into their inventories.. I don't really remember what all is different from V2 to V3 but I can give them spending money and tell them to go shopping, and dismiss them and send them back home if I don't need them anymore. I will often temporarily add a respawning character to my party because they can come in handy but I don't give them any items and if they get lost they're automatically dismissed. As long as we're in the same cell they'll follow my orders.
Oh, here are the things that were added by version 3, and they all work great!
3.10- Added learning spells, horse riding. Minor bugfixes.
3.11- Stopped teleporting on horseback.
3.12- Bugfixes, added loot options.
3.13- Fixed wandering off, reworked horse riding.
3.14- Fixed healing in combat, looting 0 weight items, more bugfixes.
3.15- Added organisation for non-persistent NPCs. Upped default range on teleport back. Added disable teleport option.
3.20- Migrated party handling to leveled list. Major behind the scenes changes.
3.21- Fixed horse riding errors caused by migration. Fixed healing.