I use Peak4 kites mainly 3m, 4m, & 5m sizes which covers my 65kg on a good surf foil from 8 knots to 30 knots. Can't go back to other kites, both twin skin and LEI, as they feel dead in the air on a surf foil by comparison to the Peak4. I also sell the Peak4 kites so I do disclose some bias.
However The Peak4 kites I sell are to surf foilers with a range of LEI kites, (including Clouds), and other foil kites and I rely on their feedback as to what they think with regard to their respective weight, foil and wind/water conditions. So far without exception they love their Peak4 kites
Not only do they love the Peak4 they buy, but they often buy another Peak4 in a different size to cover more wind range and sometimes a third or fourth Peak4 as well!
With the cost of a Peak4 being relatively low, you can buy two or three for approximately the same price as one medium sized brand name kite.
There are a couple of provisos with the Peak4. Number one is don't start with an 8m or above unless your wind is always under 10 knots. The essence of the Peak4 is experienced with sizes 6m and lower. Although some say the Peak4 is in some ways not a light wind kite, it flies better in light wind than virtually any other kite due to its very low weight. All of the Peak4 kites from the 6m down weigh less than 1kg. If a given Peak4 kite can get you out of the water then you'll have plenty of power for foiling. It's amazing how much power one of these small single skin kites can develop.
The drift of the Peak4 can't be exaggerated. Virtually nothing except a spiders web in the wind will drift as well. This makes down the line waveriding relatively easy and mistakes in timing your turns and cutbacks are much more recoverable compared to other kites. Yes, you will drop the Peak4 and sometimes you won't be able to relaunch. But you really have to steer the kite into the water, it won't fall out of the sky like an LEI or twin skin kite with low wind or low line tension.
The bridles are relatively simple and durable as is the kite. No-one I know has worn a Peak4 out yet and due to being an open cell single skin kite crashing it into water, sand or grass doesn't hurt the kite, it just collapses. Therein lies another Peak4 advantage, safety. Crash the kite and it's lifeless. For snow you can attach the supplied B-Safe system for the ultimate in 5th line safety. The Connect bar Flysurfer makes for the Peak4 range is probably the best, simplest and least expensive bar for the Peak4. However most of my customers just use any equal length line bar they currently have with no problem.
I haven't tried an Ocean Rodeo Aluula kite and I believe with regard to LEI kites it's a massive advance. For the same reason that the Peak4 is great the weight savings of the Aluula kite give it an advantage over other LEI kites. However the cost of one Aluula kite would buy approximately 3 Peak4 kites, is still much heavier and needs pumping up.
So if you have a surf foil, approx. 1000 sq cm plus, reasonable wind and a desire to have massive fun at a relatively low cost try a Peak4. You can't go wrong as even if you found it wasn't for you there are plenty of buyers who'll happily purchase it from you!