Can I have a list of the most complete bug free new land mods. I already have the Elswyr one but I have heard of others but I want to know of the most completed ones.

There's Elseweyr and...err.... that's just about it. Any of the big 'province' type expansions are all either WIPs or abandoned.

There's Windfall, a high quality quest mod that takes place on a large island in it's own worldspace.

Onra's recently released heightmaps http://www.gamesas.com/bgsforums/index.php?showtopic=1073491 add playable landmass for the whole of southern Tamriel but the lands are empty.

SoVvM is still WIP i belive, but its more than enough complete to have fun in

http://www.gamesas.com/bgsforums/index.php?showtopic=930089&hl is a list from the list of mod lists for new lands. enjoy!

..but unfortunately the actual list portion disappeared a while back. You can still find a couple good ones if you look through the posts.

Check this link as well.
http://www.tesnexus.com/downloads/cat.php?id=30&page=1

Look up Stirk.

Bartholm, Viking Village, Stirk and Daggerfall Memories - Cybiades are the new land/quest mods I've played that I would recommend

As for something the quality of Elsweyr, nothing at the moment, but there are many in development mods of that kind. Skyrim, Black Marsh, Hammerfell and High Rock I remember seeing WIP threads for

http://www.tesnexus.com/downloads/file.php?id=27730

I'm hoping that Onra's heightmaps trigger the creation of many new visitable developed-location and quest mods. If nothing else, I drool over the possibility of a high-quality lore-specific http://www.uesp.net/wiki/Lore:Senchal to complement Iliana's Elsweyr-Anequina.

-Decrepit