Exhaust System, Which one better? Y pipe dual exit (Hks legal) / Straight + single exit (greddy,ark,etc)?

[fkturboindo]

Need your opinion/ suggestion for better exhaust performance for daily driven.

Civic 10 th Gen, Hatchback, CVT.
Catless Downpipe + Cold air intake.
wanna upgrade an exhaust (no problem about rear diffuser)

which one better?
1)Straight Pipe with resonator (like Greddy ddr/ Ark/ Greddy supreme/ Hks, Nvidia, etc)

or

2) Dual Exit exhaust (Y pipe) like Hks Legal?

thank you??