Sony MSMT4G 4GB Memory Stick PRO Duo (Mark2) Media

This product is stated to be 8 GB, and is manufactured and labeled as such, when in all actuality it is only 4, what a rip off.

Quick delivery. Excellent quality and easy to install. Is already formatted when received. Made close to 1000 photos of excellent quality with this Sony memory chip

I have had no trouble with this memory card from sony. To save wear and tear on the memory stick when putting in your computer it is best to use the memory stick duo adapter MSAC-M2. This is a great product and will last a very long time.

If you plan to use your PSP for video, audio (MP3 player), downloading games, etc., you need to have 8 Gb cards only. I wasted money getting a small one (1 Gb) thinking I would not use up a Gig, but I did very quickly once I started downloading pictures, music, and games into to. After that I got this 8 Gb card and I have never had the need to "delete stuff" again.

If you are buying a PSP, don't waste your time or money with less than 8 Gigs. You won't regret it.

It works as described, seems very quick for data transfer in my PSP, and as for memory cards I'd rather have a Sony brand then some knock-off that dies in a month.