Hello,well I'm pretty sure t'll be a silly question,but im totally grenn so......Anyway im about to buy a new headphones up to 170 pounds and i consider between these Sennheiser HD25-C-2 , seinnheiser hd 598 , Sennheiser HD25-1-II PRO. Mainly ill be using them on my android htc one x device and on my tv for cinema/gaming.I ve got no amplifier so I would ask you for your opinion as i dont want to waste money on a headphones that i wont be able to use their potential.Maybe youve got some other recommendation?My preferable genre is hip hop/rock so i need some bass on them,tahnks for any help.