1. 當代中文課程
A Course in Contemporary Chinese
2. 遠東商務漢語 (繁體字版)
Far East Business Chinese (Traditional Character)
3. 實用視聽華語 Practical Audio-Visual Chinese
Previous batch or seniors at the language centre I went in Taiwan used 實用視聽華語 Practical Audio-Visual Chinese. I think I like the grammar part, easy explanation especially 把 grammar-they put in the same chapters
Then 老師們 decided to change to the Contemporary Chinese textbook, it also has 簡體字 simplified text in it. The contents and issues presented are very relevant and updated.
I remembered at our language centre, those students who already learnt chinese in their home countries and only come there for a short period like 3/6 months can opt to answer in simplified chinese during exam.