Best headphones or monitors for hearing true sound with an Arranger KB and why...? Thoughts..

Right now Im using a pair of Samson SR850's not bad for the price but I know there is better.Never in a million years would you ever imagine…That a $50 pair of headphones could deliver studio quality sound…right?The Samson SR850’s are are worth much more than their modest price tag.True…you probably won’t hear its name mentioned among gear-heads…Yet the SR850‘s offer many of the same features of other headphones costing several times as much.
If you’re strapped for cash, you won’t find a better deal than the SR850‘s.

PS: and yes I know not to setup the KB with headphones for live use,....just sayin'....but looking for a quality set of headphones for home studio use using the Pa4x, etc,..what are you using