Anti-Aliasing Method & Mantle (AMD/ATI)

I have Radeon R7 250 , > AMD Radeon? R7 Series Graphics <
In the AMD CCC i have 3 AA methods to choose from:
1) Multisampling
2) Adaptive multisampling
3) Supersampling
Which option is better for quality and which is better for performance?

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According to Wikipedia and AMD/ATI website,Radeon R7 250 have Mantle,but i don't see it anywhere in the CCC.
How can i test if it actually works?,is there any benchmark software?

I tried Adaptive Multisampling with my R9 280X on Watch Dogs and it looked fantastic, but absolutely destroyed my framerates. That's going to probably be the best looking, but you'll need a good CPU to pair with that 250. Multisampling is probably best for performance, but I usually skip setting that up in CCC and just do it individually in the various games I play.

Here's how to enable Mantle: Mantle renderer now available in Battlefield 4 - News - Battlelog / Battlefield 4

I haven't seen the option in any of the games I play yet, so I don't know how wide spread it is.

What about Supersampling?,i remember such option in The Witcher 2.

I'm betting Supersampling is for extreme quality, and would likely slow your framerate way down, probably to basically unplayable levels. Give it a shot, though. You never know.

1,2,3 worst to best and also fastest to slowest

There are no options in ccc for mantle, it's something you control individually in supported games from their in game options. But this is free and easy to test with mantle on and off
Star Swarm Stress Test on Steam

I wonder what Anti-Aliasing Mode "Enhance application settings" does,and how it's different from "Use application settings".