The price/quality ratio of the PUC-20 is a lot better compared to its wooden competition.
The fingerboard is moulded ABS with integrated frets. This is superior to the rough painted wooden fingerboards that you commonly see on other cheap coloured ukuleles. Another advantage of the fingerboard is that it is precision made and moulded in one piece, so no badly laid or rough frets and great accurate intonation up the neck.
The Korala PUC-20 is a great ukulele for beginners: low price, but durable. The metal tuners are the only thing preventing the PUC-20 from being fully water proof.
An experienced ukulele player can have a lot of fun with the PUC-20 as well. It can easily be travelled with and handle a few bumps in the road and is very affordable.
The PUC-20 deviates from the norm, but positively surprises everyone. It sounds great, looks cool and if you can keep the headstock out of the water, you can even take a bath with it.