I use REAPER and am totally happy with it, but I got an email ad for MixPad and out of boredom, decided to try out the free version. To my suprise, it turned out to be a very capable and efficient little DAW. Not as sophisticated as REAPER, but gets the job done and has all the 'essential' features....plus, it's free.
I think it's main feature is that it is VERY easy to use; I was able to master it in about 30 minutes (helped by my long experience with REAPER). If you're looking for a very usable DAW (beginner to intermediate experience) for home studio use, this might be a good candidate for you. There might be some bugs or flaws but I didn't encounter any during my pretty thorough testing. If you've used it or are currently using it, I'd like to hear your thoughts about it.
"Faith means not wanting to know what is true." [Nietzsche]