Either way, I strongly suggest you try some on in a shop.
TBH this is easier said than done, most high street bike shops don’t stock that many Full Face lids (trust me I tried), as most of their walk in trade these days is road based, and a lot of shops that do stock them have maybe 1 or 2 brands, and sell them so infrequently that they either a) don’t have many sizes in stock or b) sell only the top end version as if it’s going to be sitting on the shelf for a while, it better earn it’s keep with a big ticket sale.
For occasional use the 661 comp is great value, The foam gives a little over time, and you want a FF to be a bit tight, if your end the end of the size range, go down a size.