I have a S2 ST 40 GB that I bought my wife about 3 years ago and we just reactivated it a week ago. I then saw that there are deals out there where you can get a S2 ST with $30 or so cashback. Are these 'newer' S2 ST any faster than the one I have now? I might just cancel my current plan (30 day guarantee) and purchase a new one just to get the 80GB drive. Also, I'm only on OTA right now so the S2 DT is out of the question. Thanks.