I agree with Alfredo8100. I think that you should go into a store and discuss your intentions and your budget.
Downhill bikers vary greatly in how fast and how high they jump. So, I think that if you are an aggressive downhill biker that jump off short cliffs, possibly only a downhill bike would suit you.
2014 Liv Lust
2013 Specialized Fate Expert with carbon wheelset (sold)
2012 Specialized Amira Elite
2010 Santa Cruz Juliana with R kit and Crampon pedals (sold)
2011 Specialized Ariel Sport,suspension post,Serfas Rx Women's Microfiber saddle (sold)