Max Bbs Info Which One Is The Right One? Or Are They The Same?

Which one is the right one? or are they the same? - max bbs info

http://www.amazon.co.uk/Datel-Action-Replay-Max-PS2/dp/B0002LHSV6/ref=pd_bbs_2/202-8373181-5345415?ie=UTF8&s=videogames&qid=1185633656&sr=8-2

http://www.amazon.co.uk/Datel-Action-Replay-Version-PS2/dp/B00005TQ8W/ref=sr_1_4/202-8373181-5345415?ie=UTF8&s=videogames&qid=1185633656&sr=8-4

http://www.amazon.co.uk/Action-Replay-Version-Limited-Memory/dp/B000063LFQ/ref=sr_1_5/202-8373181-5345415?ie=UTF8&s=videogames&qid=1185633656&sr=8-5

What might work in my PS2?