Hey there Penn,
And here are those variations ...
#117 - Small 3mm rounded corners, sun rays but very subtle, blue wave tip to distinguish the two elements
#118 - Medium 4mm rounded corners, no sun rays, less sky, and waves blended into volcano, no grey highlights
#119 - Large 5mm rounded corners, no rays, but clouds, wave blended into volcano, and top of orange banner for the word Endurance also rounded.
Personally, I think I prefer either the 3 or 4mm rounded corner, and probably leaning towards the 3mm.
I think the rays dropped back work quite nicely and put the focus on the volcano and waves.
So I'd probably lean towards
#117 - but maybe blend the waves into the volcano like in #119 - makes it a step simpler again.
Look forward to your comments.
Cheers
Angus