memory stick is being delivered tonight and whats left of my photo's will be transfered on it asap..
Not sure I would entrust a flash drive as a backup medium for important or personally valuable data.
Unless you happen to own one of the "industrial" variants, the reliability, performance, power consumption and operating temperature range of the consumer models varies widely. This is down to both elements used in their construction as well as software algorithms they run to deal with stuff like wear levelling.
Depending on how far you want to go, a better route might be a DD or DDD route (Disk to Disk, or Disk to Disk to DVD/CD or even USB). So make an external RAID array your primary backup, and then since CDs are cheap you might want to consider an extra level and put a copy of really important stuff onto CD or DVD.
The golden rule is 3 copies (minimum) for anything of importance to you, preferably with one copy in an "offline" format. Live + 2 backup.