I'm a big fan of Axis gear, as it's realistically priced (for example new masts from $120), well engineered, there's a big 2nd hand ecosystem, and they have been in overdrive for the last few years with the R&D. If you buy a good 2nd hand setup you can slowly pick up new wings etc as your skills evolve. There are, however, a couple of different series of fuselages, and it's not all interchangable. It can be daunting at first. Happy to help anyone on that front.
However....
I bought a Triton monowing about 6 months ago (see my profile pic) and I have to be honest I barely touch my Axis gear now, it's all I want to ride. It's fast, stable (once you figure out foot positioning), super reactive and so, so much fun. Not the most forgiving platform for trick progression though, difficult to switch feet etc. It turns on a dime though so you can carve tight powered gybes all day.
www.tritonfoils.com/ I have an Axis tray 94 with a HPS930 which I use as a really light wind foil for when the Triton would be too underpowered. This is still capable of over 20kts in 10kts of wind and carves well in swell.
axisfoils.com/products/tray-v3-carbon-foilboard-94axisfoils.com/products/hps-930-carbon-hydrofoil-wingaxisfoils.com/products/380-speed-carbon-rear-wingI also have a HPS700/380 for kite foiling but I always seem to grab the triton instead, I'm deciding whether to sell it or keep for my kids as they progress.....