What are you doing with the machine? Without knowing that, we can't help much.
The first two PSUs are POSs. Avoid them at all costs. I'd also highly consider getting 4 GB of RAM. RAM is pretty cheap these days, so it shouldn't add much to the cost. I'd also switch the HDD to the Samsung Spinpoint F3 500 GB (or 1 TB, as I've seen it around the same price) or Seagate 7200.12 500 GB. They'll be faster an roughly the same price.