Marco Arment wrote this two years ago:
I never make technology-buying decisions based on future promises, rumors, or potential. I let other people be the bleeding-edge extremely early adopters, and I stick with what I know will work and stay out of my way. I don’t buy things that are “getting better”, because they usually don’t. Whatever caused them to be lacking in their current release will usually prevent them from being great in future releases.
I buy things that are great today. They’re usually things that have been great since day one.
This will holds true to other things in lives.