Not wanting the hassle of transferring windows from the old drive to it
It's no hassle at all. You put both drives into a machine and clone the old one onto the new using something like Acronis True Image or a Linux live CD, then take the old drive out and boot off the new - bingo, everything transferred, working exactly as it was, no need to re-install anything.
I did this with my Windows 7 system last week, moving from a 128GB SSD to a 256GB. Put both drives in the PC, booted a Linux CD and did dd if=/dev/sda of=/dev/sdb bs=64k
The copy took about 5 min. Switched off, unplugged the old drive, powered on and the new drive booted straight into Windows.