I really liked Summerset, purely on it's aesthetics. But it also capped a really great story line.

Wrothgar

You also forgot Imperial City

Elsweyr, simply by the fact of cats, dragons and necromancers! Thats a nice variety of additions..

best expansion zone they have ever built

EDIT: glad I'm not the only one who didn't like greymoor.

Close for me between Morrowind and Summerset. Voted Morrowind because I love the Warden class. Expansions after Summerset just haven't drawn me in as much as the previous ones. Still enjoyable, but there didn't seem as much to do in Greymoor and Blackwood. Elsweyr was okay but I didn't get into the dragons much, and I'm not a Khajit fan.

Elsweyr for sure. And I don't even like khajiit.

I changed my main to a necromancer at that expansion because I liked the class so much. Loved the dragon world events too. And the story was my favorite.

Didn't care too much for the zone itself, but that was easily ignored due to all the other positives.

Really hoping for a banger of an expansion like Elsweyr again next year.

I put Morrowind because I think it is the most complete zone. It seems to be much larger than Summerset and Elsewyr, and it was the first expansion, imo, that was a notice upgrade from previous expansions. Morrowind as a zone looked MUCH better than wrothgar and craglorn. The quests, including side quests, were much better. And it had a new class. It felt like ESO was taking a real step up in game quality.

Summerset is my second favorite, because it's the most beautiful zone in the game, and it also has great quests.

Elsewyr is third. Also beautiful. Quests are good, but not as good as Summerset and Morrowind.

Greymoor honestly isn't very good. I think the zone is bland. Voice acting from the nords just sounds like some horrible french accent, and the quests aren't as good. The Antiquities system is so freaking stupid for an MMO.

Blackwood so far....meh. Honestly it doesn't wow me, and theres no new class or new skill lines. The companion system is...okay...but there's only 2 companions, and they don't add to immersion since everyone has the same one, and the game is too easy for them to actually be useful.

Seems like the game expansions got good, and now are starting to get worse since the addition of greymoor. I hope ZOS tries to wow us with the next one.

To be honest, I only voted summerset because it added psijic skillline and jewelry crafting. I have not finished summerset or really even fully explored it, but those new skill lines had an impact on all my characters.

The best expansion was Morrowind. That was my first elder scrolls game so I'm heavily biased.

I miss Orsinium... So Summerset would be my 2nd choice...

I love summerset, Morrowind, Elsweyr and Blackwood. This was a hard decision. I haven't played the blackwood story, so I only can compare the zones.

Summerset has the most beautiful zone. Green Trees, colorful Flowers, crystal clear water and white buildings.

Morrowind has great buildings and mushrooms, but I don't like lava lands this much. In vivec I like to hear the haven sounds.

Elsweyr (especially southern elsweyr) has great, colourful areas and nice towns and houses. And Dragons!

Blackwood doesn't have many colors, but beautiful places.
Leyawiin for example looks cozy and feels relaxing with the sound of the bells.
Farmer's Nook in the north is a great place as well.
But most important for me are the companions.

Because of this, it was such a hard decision. Even when I leave Blackwood, I carry my companion as a piece of Blackwood with me.

I most looked forward to Morrowind (because of my love for ES 3), but I thought Summerset was actually the best — good quests ( with the exception of the tedious psijic grind), beautiful landscape, great furniture (except for the difficulty obtaining the necessary item to make it), plus Darien! I was glad to finally see jewelry crafting even though it’s resource-heavy. Morrowind was well-designed, too, and I loved the warden class. Elsweyr is gorgeous, too, but I’m not a huge Khajiit fan.

Story-wise, Greymoor was disappointing. And I have no love at all for vast underground caverns. As for Blackwood, I like the landscape and I’m happy to have the companion system, especially if it eventually gets more complex. But the Oblivion portals are a dead bore. I haven’t done many quests there yet because I’m busy running around the old areas, leveling my companions.

Elswyr. For the introduction of all the fur stocks and this one’s favourite Alfiq, Clan Mother Tadali