I Want one but not sure witch one!!

AR-15 has great accuracy and is a better rifle all around but the bullets are way to much for a can of thousand (Cheap) rounds are $400 dollars and i live in the usa im not fighting any armys or zombies.
A Cheap new ar-15 goes around $800

Ak-47 been No. 1 rifle in the world for years. But accuracy is poor. But built sttrong and for 1000 rounds its around $200
and ak go for around 500.

Witch one would you pick??