I prefer the shape of the second ones. But I honestly think you would get bigger bang for your buck at ID Jewelry.
I have these ones in 1.50ctw and they are fabulous. They also offer them in 1.00ctw and they would also be amazing. I am very happy with the quality of mine. I would ring them and ask them what they could do for you.
^^ agreed mom2boys! The whiteflash ones are gorgeous but they are roughly 2.5 times the price of the Blue Nile ones. The IDJ 1.00tcw ones will likely be closer to budget I would think!