2008 Volvo XC70 Trans Oil

[Chaver]

Hello all,
Looking for some guidance here. I'm planning on flushing the transmission oil in my 2008 XC70. I'm having trouble deciding what oil to use.
I know you have to use JWS 3309 for my TF-80SC AWD transmission. I'm looking for a full synthetic, I shopped around and IPD has AISIN JWS3309 conventional ATF. Then I notes guys are using Mobil One ATF 3309 also I had my local butcher do the last trans replacement and they used Valvoline 355. I'm debating using the Volvo brand 1161540
but is spendy. Thanks