Every headphone has it flaw including these two. It is you to decide which one fit your needs. I do have Fiio E06 and Q701, (but I have not listened them together I believe) so if you wish I can do some comparisons how they together perform.
both will be bass light, compared to real world IMO, both will be somehow bright sounding... as far as I can tell Q701 is very good headphone with nice tight bass, good speed/fast decay. cons are: spike somewhere 2-3K and uncomfortable headband if you have larger head...
describe more what kind of sound do you like, what you are listening and better options might available.
cheers