Therre are 2 types- Besta All- Pass 1 and Creaive Hansvision
PX2051 (approved by SEAB)
Being a user of both, I can tell you that the Creative is more
user -friendly in some areas (can just type in hanyu pinyin of a
phrase and you can find it.You can't do that with the Besta.
However, the Besta is likely to be more reliable ( my previous 2
Creatives spolit bcause battery leak and the screen on my third one
is fading already.No prob with the Besta so far.Both are good in
some ways but I would advise you to use Creative for exam.
Creative is ard $30 and Besta is ard $40