Question to WP Community - The "Alternative App"

I was playing around with a friends Titan once and I noticed that he had a lot of "alternatives". By alternatives I mean he uses apps that aren't the official version of a service. Like for example instead of using foursquare he uses an app called 4th & Mayor. And he uses some sort of Pandora client.

Thing is he swears by lots of his alternative apps. I see a lot of people say Windows Phone needs an official app instead of alternatives but reading around often the alternative apps are better.

My question to the WP community you think the alternative apps are better than the official ones?

(Also I'm not asking about apps for things like Pandora or Instagram. I'm talking about apps that have official and alternative versions on Windows Phone).