I've got the Logitech z5500 5.1 and notice a significant difference. On headphones, not that much. To get the most out of the card you need min of 512 mem. I used it on an old laptop with 256--not good. With 512, you are able to use the...
I've got the LG screen and for the life of me I can see no sparkles. Might just be me, but whatever others are reporting about their LG screens just ain't happening on mine.
The colors are as deep and vibrant as any laptop screen...