Best Lockscreen App?

Hey there!
So, I have a Samsung Galaxy S4 Mini, running Kitkat (4.4.2).
I'm looking for the best lockscreen app there is to find, but I wasn't quite able to find it yet...
I want a lockscreen app under these conditions:
- Free
- Which allows me to ANSWER notifications (not only SMS!) right on the lockscreen, without having to unlock it
- Which allows me to use a Pattern lock, or at least a PIN/password one
- Which has and music controller (I use Spotify, but so far I haven't found one lockscreen app which DOESN'T support it. It's important to me, though, so I'll just list this here too)
- (Optional) Which allows me to, even in the lockscreen, dropdown my notifications/status bar. Almost none of the apps I tried let me do this (only Echo and ZUI, I guess, since Android KitKat itself doesn't allow me to drop down the bar when there's a lock set)
- (Optional) Which has any kind of quick app launcher

Can you guys PLEASE help me?

— modified on May 18, 2016, 3:05:27 PM

Anyone?!

someone, please?!

Well, actually I've experimented a lot of lockscreen apps that do not use ads, but anyway, I edited my request. It can have ads, but ir preferable if they're at least not intrusive...