just for info:
The read speed for a 3000 series is 100mb/s, the 7000 is 120mb/s - there is a warranty difference between the two, 5 year for PRO (7000) , 3 year for MOBI (3000). 3000's have a plastic case, 7000's have aluminium cases.
cost wise from PID, 7000 series: 64gb is just over £1000, 32gb is £660
3000 series: 64gb is just over £600, 32gb is around £300
Nev.