immaculate brand new condition unlocked galaxy s2 +

i have an immaculate condition unlocked with original box and cables samsung galaxy s2, would like to swap for an i phone 4 same condition, unlocked is preffered but if locked on 3 would be fine. plus it has an extra 32gb sd card plus 1 year premium co-pilot with traffic subscribed PS: i work in brighton, i come london on sunday night till tuesday afternoon