Help Needed for New Flute!

[sdfluteguy]

Hey! So I'm a bit confused between choosing from the following flutes:

Azumi AZ 2
Sonare 505
Di Zhao 600
Amadeus 680


I've tried them all out but I still just cannot choose/see a difference. Can someone with experience please guide me in the right direction? Maybe which makes are better/more worth it? Or what type of sound each gives? Just something to work with?

Thanks!