Unless you're a FS addict and you only get satisfied with a FS kite above your head, for wave riding the Concept Air Wave (strapless surfing and hydrofoil) is in my opinion unbeatable:
I had again two sessions this week under the wave 4.5 in good winds and 1/1.5m waves and the kite behaves like a trainer kite with depower, I could move it everywhere in the wind window and focus only on surfing. I think this is the best wave foil kite so far for the way I surf, i.e. by trying not to use the kite in the wave (and I now think that this is better than small sizes LEIs).
On hyrdofoils, some like also the small pulsion 3.69 (this is its size in m²). I like it less for strapless surfing because it has a little boost which is useful for hydrofoiling (in particular for waterstart and to get some instant power) but that destabilizes me when I am surfing.
The more I use it the less I am thinking about kites and focus on surf and some new boards design (I recommend some volume ... e.g. a groveler with a flat rocker and low toe angle for the fins unless you ride very steep powerful reef waves). This is the first time since I started kitesurfing (a little more than 15 years ago) that I think I am ok with my kites quiver! (waves 3/4.5/6.5 and pulsion 9m).
The other kite that I really liked lately is a FS Sonic² 6m, this is a great litlle kite as well (but obviously not for the same reasons)- so really nothing against FS in what I am saying above. They also do a very good job but for now Benoît Tremblay at Concept Air is clearly doing the best job for small sizes Wave foil kites.