I personally rather prefer the latter--it's a more scientific sys tem, and is more in line with the pronunciation of the letters in Western languages. The pinyin system has many shortcomings--the system of transcribing initial consonants and vowels is not always coherent, and in some cases is even contradictory.
我個人則較偏好後者，它的系統較科學，較符合西方字母發音方式；大陸的漢語拼音有許多缺點，他們的轉換系統，有時候不太合乎邏輯，甚至互相矛盾。