Could you recommend a set of fcs 85/90kg

I was thinking fcs,large
These are a good price, unsure if the model is old ??

Jesus ...no bugger use fins

We all use fins
Mine are the original 2 tab
I'm in NZ so looking at set of quad fins from Curve

Foam if they are priced right,go for it ,I have used the performers,and they are a good reliable fin. The bonus with the set shown is the box rear fin ,great for quick adjustments

so depending on what board they're to go in and type of waves, but as an all rounder they're ok. For myself I use machado quad for waves below head high or weaker waves and AM large for powerful waves.
Everyone has their own opinion and for some my fins may not work as weight and ability of rider varies.

Just forget about these boat anchors, get Quobbas!