[Yaesu] roofing filter or IF mod kit?

[Massimo IZ5ASZ]

Hello everybody,
I have one YAESU ft1000mp MKV with the IF noise reduction kit by Inrad installed. I am quite happy whit it.
I wuold like to buy the roofing filter kit, but I can not decide what to do. Wich is the best choice?  keep the IF hiss mod or to buy the roofing filter?
Can anybody  help me to decide? 

Ps.
My activity is mainly ssb dxing.

Thanks for reading and responding.

73, Massimo IZ5ASZ