Headphone doesn't give you the same experience as speaker,i am a moviephile so experience is more epic with the speakers for example Captain America winter soldier fight between Cap and Bucky we can actually feel the strength of punches if you have good speaker.But with headphone you can't..i can't really explain but some movies must be seen with speaker.My advice..go for smsl sa50 and Pioneer Andrew Jones BS22 or Teac SL 265HS(if you can get it for 150$ or less) and Tackstar HI 2050 and Schiit modi+SMSL SAPII...Tackstar is the best value for money headphone in the market..it has better Highs,mids,soundstage than ATH M50 and it costs only 40$ but don't let the price fool you..this headphone is compared to Beyerdynamic dt 880s and AKG q701..you can get it from ali express or amazon..look at review in head fi..
http://www.krish-tech.com/2014/12/tackstar-hi-2050-headphone-review.html
This might help you understand why Speakers are better than headphone