I have used RTM for a while. For me there are some important differences between the two. One thing is, that it is extremly easy to create a Next Action in Nozbe.The way I used RTM demanded too much effort from me when I was inputting my actions. At this moment I am writing a blog post on this and hope to have it online soon. In this post I’ll explain what I like in Remember The Milk and Nozbe, what I didn’t like, and why I changed from RTM to Nozbe.
Oh yes, you can create a free of charge account for Nozbe via this link. The account is limited in number of Projects and Contexts, but you can start from this free account and really SEE and DO some Nozbe GTD.