x1 to x1 evo didnt really seem to change
Go the x1/evo gestie you won't be disappointed and i'm not just saying that cause i'm a select man- they really are awesome fins and they aren't quite as mabo as your current fin

. The last mfc wavefin I had was bloody good but the x1's leave it for dead.
On a side note they are bloody tough also, I hit the rocks recently on waveboard- put hole in board but fin just bounced over the top with hardly a scratch- was worried there for a bit that i'd smashed up one of my favourite fins.
Ask santa for a x1 evo 25cm and you love him long time