Hey Im planning to buy an original MS pro duo and I just saw the MS pro HG-duo and kinda got confused on what to buy. I need help and Im looking for info :D

I want to know how much transfer/reading speed the PSP can handle. The Standard pro duo stick can allow 15 mb/s transfer while the new HG duo has a minimum of 30 mb/s and a maximum of 240 mb/s. Now, I was thinking of buying the HG duo but I'm not an impulsive buyer. If the PSP cant utilize the 30mb/s then Im just wasting my money if I buy the HG duo.