get a 2nd hand HX D2 and mod it kao kao la, sure can get fantastic result. i've heard 1 b4, really sound different than original D2. but i dunno wat he modded inside, i suppose it's the DAC, caps and modified DC/DC convertor. the sound is at least on par with ODR D7 combo.

F#1 9990 + H990 cost a bomb, bro... even the old 7990 + H900 oso damn exp. ODR cheaper a bit, hehe. dun really like P90's sound, sounds quite lifeless to me. listening to instrumental tracks will be great, but vocal is a bit let down. P99 according to a sifu, he said P99 is just a compact P90 but sounds 'simpler' altho tuning capabilities is very gud. meaning the current price is not worth the SQ u get in his opinion. i myself neva heard the P99 b4 la.