There are 4 different sizes: from the smallest to the largest: the soprano, the concert, the tenor and the baritone.
The soprano: it is the “classical” size that can be made of the ukulele. The sound is also very Hawaiian. It is very cute and often more affordable. On the other hand, attention, because it can be much more difficult to handle than the others because of its smallness, precisely. The handle is very narrow and therefore space to play, more cramped.
The concert: the classic size for a beginner. It is larger than the soprano, but remains small enough to make “small ukulele”. The handle is a little wider, leaving room to play. The sound remains “Hawaiian”. This is the recommended size for beginners.
The tenor: much wider and longer than the soprano. It is the ukulele which is played generally by the artists recognized in concert. It has a very wide neck and allows you to play not only strings, but also arpeggios (which can be complicated on the soprano and the concert if you have large hands and large fingers). It is more expensive and deserves reflection if it is chosen as the first instrument.
The baritone: it is the biggest ukulele, it can sometimes look like a guitar. It does not agree in the same way as other ukulele. Its tone is deeper and more serious than the others. It is not recommended for beginners, because the agreements found for the ukulele on the internet will not agree. On the other hand, it is a very nice instrument, and we can have fun playing it. (I have not yet tested unfortunately).
In summary: The best ukulele for beginners: the concert will suit the majority!
Especially not going to take you a ukulele for 10 € !!!! What a mistake!!! These are ukulele cheap, certainly, but that will never stay tuned and will not have a good tone !!!!
For about a 30 €, you can get a Makala, which has a very good reputation. It will be made of plastic and you can find it in various colors. It’s one of the cheapest on the market that’s worth it!
Then you have Kala who makes ukulele by very dear. They will be laminated and made in China, but the reputation of this company keeps climbing !!!! I find the value very very correct! Besides, I myself have a uke concert kala (FMC, and I love it).
A little more expensive, there are the Flea and the Fluke, always with a very good value and an excellent reputation. They are made of plastic and have a reputation for being strong.
There are Oscar Schmidt who are very good and really beautiful !!!!! These are the ones used by Ukulele Mike.
Finally, there are the Pono, a little more expensive, but all in massive wood! They are made by the very great Hawaiian brand, Ko’olau. The parts are made in Indonesia and assembled in Hawaii. There were problems with wood that cracked with the Pono, but they have an excellent guarantee. Eddie Vedder and Sophie Madeleine play Pono.
All these brands cited, make ukuleles not too expensive but while retaining a certain quality.
When searching for your uke, you must be able to keep it tuned and sound good. These brands have built a good reputation over time!
If you want to put the price, or only the best of the ukes can satisfy your desire to play well, then it will have to count with a budget of at least 500 € (and it can go up to almost 3 000 €) !!!!
There you will find magnificent instruments and especially brands that have forged the best reputation !!!!
The “K Brands” will satisfy your thirst for perfection and melody !!!
There are Kamaka, Kanile’a, KoAloha, Ko’olau and G-String. They will generally be made in solid and will use the best woods (the koa is said to be the best).
I can not tell you more about these marks, because unfortunately I do not have the means to get one. Maybe one day, who knows!
Here are just a few brands that I know, either of reputation, or for having tried. There are other brands that I do not know, surely very good brands, so do not hesitate to share between you!