the next big price rise would be the halving of blocks to 12.5btc ...in 2017.
block halving will happen in 2016. the "big" rise will most likely start in january or february 2016. i think target is $400-$450 after halving.
Why it will start on January or February while the Halving block reward will happen on the last end of the year or the beggining of 2017 as far as I know
Beside I was expecting a lot more to be honest , 450$ is a little bit low if you ask me .