Hi Rose,
Tevion is considered a very low budget model i.e. one should not expect too much from it. However, sometimes we can all be surprised by cheaper LCD TVs outperforming certain more expensive models. This fact is borne out by the [broken link removed] I am not sure if this is the same model Aldi has for sale, but such a positive review nonetheless should inspire some confidence in the general brand.
My advice notwithstanding is to instead choose a more reputable model like Sony, Samsung or my own personal favourite: Toshiba. [broken link removed]which is widely considered as a fantastic TV at a great price. I am currently about to purchase this model based on months of research and positive reviews.
Good luck