Wouldn't a beginner be a safer choice justified by price? so I will know what I really need after using this hantek.
Considerando somente essa lógica, você poderia comprar um
DSO188 e ver se ele atende a parte das suas especificações: certamente o preço e o risco são baixíssimos, você terá a funcionalidade de um osciloscópio para ondas de até 1MHz (suficiente para áudio) e ele vai te dar experi~encia para saber o que você precisa em um osciloscópio "de verdade". Assim você consegue tomar a decisão mais tarde.
Não conheço o Hantek, mas diversos artigos na internet indicam que ele é um produto que deixa a desejar. A lógica aqui é similar à do DSO188: é um produto básico (mas com melhor refinamento e muito mais banda) mas que carrega um preço e um risco maiores.
Considering only this logic, you could get a ultra basic
DSO188 and see if it meets at least part of your expectations: the price and the risk are very low, you will be able to see waveforms up to 1MHz (enough for audio) and it will give you some experience to find what you need on an oscilloscope, so you can make a better decision later.
I don't know the Hantek, but many reports on the internet point to it being an unfinished product. The logic is similar to the DSO188: it is a basic product (although a bit more refined and with much more bandwidth) but the price and risk are higher.
But meanwhile the world has moved on and other manufacturers have matched the same price bracket with more modern and better products. Recommending the DS1054Z is like dwelling in the past. Especially if you have not used any other oscilloscope then you get the 'everything looks like a nail if you only have a hammer' and 'I bought this so I must justify this purchase' effects on top of it.
This can't be a sentence coming from someone with a balanced opinion. Foreign markets suffer from variables other than the products specifications - not everyone has access to the latest models or can afford to buy a lemon oscilloscope and brush it off just because it came from a less reliable distributor or the country has no available service or technical support. Sure, the OP is willing to take the risk with Banggood, but others may not.
Assuming the service from Bangood or Aliexpress is worst than a local vendor is not valid. There are lots of local sellers which are totally crap. At some point I ordered something from Italy (that is about 2000km away) because the local distributor absolutely sucked.
Nico, my beef is with your umbrella assertive about recommending Rigol - local distribution is just one element.
My final word on the distributor question:
Sure, certain distributors are not worth their salt but countries have laws and returns or exchanges are certainly covered in many cases. In your specific case you bought from Italy because
you know you are covered in part by EU regulations. Another aspect is service and/or general technical support. Translating your case to the OP, if you are not familiar with the equipment (or is a beginner) and don't speak Italian, the foreign distributor has no obligation to provide service and support in English or Dutch. All in all, the service from Bangood or Aliexpress may not be as bad as a local distributor, but it can be blocked by additional cost or ulterior factors.