Whats the best 2500 mobile stepping.

Seeing as the thread that talks about these cpu's has like 500 stepppings for the things im not sure which stepping is the best.

Im ganna try and buy a 2500 mobile today but i dont want to buy a sucky cpu, so which one should i look for ?

The IQYHA seems to have been the best one, but very hard to get hold of now.

The AQYHA is the current one, but I don't know how it compares to the IQYHA, anyone?

AIUI, the two main steppings are IQYHA and AQYHA....