Smarter Django Hosting
I've been using Webfaction with Django and Postgres and
I only have good things to say about them. 
Jeff Croft of Django fame
WebFaction hosting is awesome! I strongly recommend these guys
for Django and/or Ruby on Rails, they support both. 
Paul Kenjora from Django Aware
We provide one of the best Django support out there:
- We have many Django versions in our one-click installer, including the latest trunk.
- You get your own Apache instance and you have total control over it.
- Apache comes with both mod_python and mod_wsgi and you just choose which one you prefer.
- We provide many pre-installed Python modules and let you install your own.
- We support various databases such as Postgresql, MySql and Sqlite.
- We support the popular GeoDjango.
- See also 8 reasons to use WebFaction.
Not convinced yet? Watch our 2min tour:

I love Webfaction. For what they do, I don't think they have any real competitors that I know of.