Good fast reading speed and reliable!
You can't really go wrong with a Sandisk. I bought this card for my tablet (ASUS EEE pad Transformer). It streams 720p video with not trouble whatsoever (I'm sure it's fine with 1080p video too). I bought this on special offer and at less than 1 pound per GB it is reasonably good value. The only negative about this card is that the total capacity shows up as 29.7GB not the full 32GB - buts that seems to be always the case with SD cards and other storage media.
I did a speed test with H2tesetw and these are the results:
Writing speed: 4.08 MByte/s
Reading speed: 16.9 MByte/s
For a Class 4 card it has great reading speed but only satisfactory write speed.