When it comes to CD-Rs I would stick to brand names if you want quality and reliability. There is an old thread on this forum where I talked about a cheap no-name CD exploded in my computer. So far I've never lost data or had CDs failing on me from the more trusted brand names. Some of my CDs are over 5 years old too. There's almost nothing worst then losting your pictures to a bad CD.
I've used a few Sony CDs and they aren't that bad. I usually like TDK CDs myself, but there are a handful of good brands out there.
Also, you won't need rewritable unless...well, unless you need rewritables. If you are only archiving your pictures then CD-Rs are much cheaper and the write speeds are usually faster too.