I have no idea about newer Reos, but if they are anything like the earlier ones (and from reading posts it seems they are), Reos are awesome wavekites as not much grunt but they can dump the power WAY better/more and smoother than other kites, and needs to be flown to get power.
So IMO a Reo cannot be compared to most typical LEI kites.
In the other end is the Cloud, which has massive low end power, so can not be compared either - but at least they can dump the power by luffing the LE as otherwise they would pull too much for foiling sometimes.
Reos can be used for waveboards and hydrofoils, whereas the Cloud is of course much better in really light wind on a foil, but not to much use on a waveboard.
So as you say for medium to strong wind, my advice would definitely be the Reos if you also ride surfboards/waveboards.
If you just foil, I can not help, but my take would be that the Clouds would relaunch much better than the Reos, as you will soon learn to get the canopy filled, just like with other strutless kites where we can experience the same, but no biggie when learned.
Some avoid 1 strut or strutless kites and go for the new 3 strut ones, for foiling, because they want to avoid the flapping if the wind picks up and they want to ride on or are far away from the launch spot - and they WILL flap a lot now…
Or if they ride on faster wings requiring a bigger kite - it also tends to happen yes and not as good.
I dont mind as I always ride in the sweetspots or below, where they work just dandy