Which Solr app for Django is better: Haystack or django-solr-search (solango)?
My answer to Which Solr app for Django is better: Haystack or django-solr-search (solango)? on Quora
I’d go with Haystack—while it supports multiple backends, I get the feeling Solr is the principle backend it was developed for. It’s extremely well documented in my opinion, and the SearchQuerySet API it gives you makes running low-level queries really easy if the higher level class-based view it provides don’t do quite what you want.
I’ve thrown a few million records through haystack without any trouble, and getting up and running with it the first time took me less than an hour from a cold start. I’m a big fan.