I would say "reliable" as a pro, but I haven't found an SD card that has malfunctioned, out of my 10 abused ones.
My SD900 and SD550 can't write fast enough to get slowed down by this card (at least that I notice); I can take about 90 pictures on multishot before I get bored of testing this fact; That's about 90 pics in 30-40 seconds, on a 7-10MP cam.
It could be 2GB...or have some wicked flames painted on it...or both