I have no idea where it is gonna end up for me...
Agree 100 with Jyoder that kitefoil is SO much faster and easier to setup and go ride, and you are never stuck if wind on the low side, like on a wingfoil.
Besides faster to get out in the water, and takes up no space in the car, compared, and no pump needed, and WAY more lively for carving.
But winging is so fun and addictive when conditions are spot on.
I avoid flat water, have no idea why so many experienced go to our flat water spot - on kitefoil or wingfoil it is the most boring thing in the world
But there are many beginners out, so assume it is because of the social thing about it, or the fact that the experienced can "show off" to the beginners - eventhough I would still always take the "good spot" not flat, close to.
I still do both kite4foil and wingfoil even when sufficient wind to both - hard to say why, but there are so many good things about kitefoiling (with Peak4 kites), in particular if there is even the smallest waves to play in, even anklesnappers with short fetch where you can look to the other side, but of course the same can be said for wingfoil now
As a rough thumbrule I know I need one m2 bigger wing than kite, for sweetspot.
Of course depending slightly whether it is on my 1350 or 1600 cm2 lightwind wing.
One of the most annoying things about wingfoil, is seaweed
On a kitefoil it is easy to drop backwards and free the mast, and start again in no time.
On a wingfoil, dropping into the water, freeing the mast, and starting all over again, is a PITA
Even the slightest number of seagrass ruins everything when you wanna glide unpowered....