Longman Preparation Series for the Toeic Test - 自學

爬過文看到板上的大大皆推薦
Longman Preparation Series for the Toeic Test 2/e

剛剛上博客來去看

總共有兩本
Longman Preparation Series for the Toeic Test: Advanced Course
與
Longman Preparation Series for the TOEIC Test: Advanced Course,
3/e(With Answer Key)

請問這兩本有什麼不一樣呢???
該選哪一本???
另外 旋元佑文法是不是已經絕版阿都找不到>"<

--