Any differences between SD cards?

[ParrotHead]

I'm looking to get a 512mb secure digital card for my pocket pc so I can watch movies. Is there any difference between different cards, or are they all pretty comparable?

[xDUCK]

AFAIK, you are basically paying for size/shape and brand (warranty, quality, lifespan of product, etc). They are all equally fast.

[dudewth]

There is one major difference between cards other than build reliability (for which you would have to read reviews). Some older cards have slower read/write speeds.
Here's a small example.
10MB/s write/read: Simpletech (http://www.amazon.com/exec/obidos/tg/detail/-/B00006JI6U/qid=1069686864/sr=1-1/ref=sr_1_1/102-4750924-4389702?v=glance&s=photo)

2MB/s write/read: Kingston (http://www.amazon.com/exec/obidos/tg/detail/-/B00006BBY4/qid=1069687119/sr=1-5/ref=sr_1_5/102-4750924-4389702?v=glance&s=photo)

[melee]

Make sur eto get the most out of it, encode your movies in divx, and get a divx player for pcoket pc (many available, google) I would think at the required resolution for such a small screen, you could prolly get 2 dvds @ 250mb a piece on there.