The only thing I don't like about these freebie give aways is the requirement that I download and install it and activate in a certain time frame. It's fine considering it's free....but I hate to get something and get used to it...and then find that I cannot put it onto another computer if necessary because I'm outside of the allowed install time.
I've used Macrium Reflect free and it works great. I've also used EaseUs ToDo Backup at work (it's free) as it's ok in a commercial environment and it works with Server 2003 and Server 2008. (Although EaseUs, is the slowest of the products I have used and the image file is the largest.
Personally at home, I use Acronis True Image 2010. I got it for $23.99 from NewEgg and I like the Try and Decide feature. I find that it is nearly as fast as Macrium.......and kicks out a smaller output file in the end.