Help me decide what is better.

Hello Folks

I am planning to get a mixer and a headphone.

My budget is not so high thus i had sorted out a few and want your suggestions on which one is better and why.

1) Mixer Behringer 750 vs Behringer 900 vs american audio mx 1400

2) Headphones Behringer hpx4000 vs american audio hp550 vs american audio hp700


I am currently in Dubai and unlike europe and US not many options here.

Please advice me on what would e the best to buy.\\

Regards

If u know of any outlets here in dubai , other than DJ Corner and Mediacast lemme know