Not the best "value," but just best in absolute terms. I think the top contenders for the title of Best House would be
1. Pantherfang Chapel (Blackwood)
2. Princely Dawnlight Manor (Hews Bane)
3. Grand Psijic Villa (Artaeum)
"Argonians have fat, scaly tails." —Rissa Manyclaws.
"Once upon a time there were three sisters: Delicious, Delightful, and Disgusting. Now, Delicious and Delightful were both very pretty girls..." —Brendalyn Jurarde.
"I smell to the nobility." —Indrasa Avani.
"A bargain with an animal is not a contract made." —Haderus Atrimus.
"Redguard makeup for sale. Free samples. Secret ingredients. Unique application method. Lots of satisfied customers." —The Mudball Goblin (aka, Cognac Vinecroft)
"Your armor looks like underwear." —Shuns-the-Knife.