umm...
i own a PSP myself and before getting one, i already had the thought of getting a Dingoo.
but first off,
you can't compare the Dingoo and PSP. they are two different systems that are designed for 2 different things. the Dingoo was made to emulate all your ROMs and games and what not while the PSP was designed for you to buy games...
secondly,
if you compare the Dingoo and PSP right out of the box, clearly, the Dingoo would win in this section since you would be saving money. for PSP, for it to be hacked and used, you will need a Memory Stick (and a Pandora Battery. not always, if you wanna risk soft modding). unlike the Dingoo, whereas you can just use it right out of the box since it is technically "hacked" so your games can just be transfered to the Dingoo. with the dingoo having internal memory, you are already saving money.
now the only reason why i have a PSP is because it was sorta... Rushed. i had to get a new device to play my music, and the Dingoo was a little far off to my dad since it was made in Asia. I would consider the Dingoo for something more portable since it is easier to bring around unlike the bulky PSP... but overall, they seem to be equally even.