all kinds of high-tech appliances not only allow us to live a life of ease,but also make our life quite enjoyable. For example, washing machines can help us do all the laundry, while high definition TVs are able to produce amazing special effects,making TV programmes more entertaining.
I like this paragraph. You have composed a good strategy. Beginning by describing a scenario, you end with a proof that this whole idea is helpful in creating fully understanding. However, this is a very bulky paragraph.
You don't need to use lazy language expressions (eg 'etc', or and so forth') They are are used more in spoken language. Also, this indicates you don't care enough to finish a sentence properly. Better omit.
One of the usually complained problems (how do you know that this brings a common complaint ???) is that there are too many options when it comes electronic devices.
many similar functions (what are they???) that sometimes it is really hard for consumers to make choice
don't leave a vague word for your readers. Better re-say