I have always wanted an iPad and thought I would wait a few months from release date before getting one.  However, I have now learnt that the current iPad only has 256MB of RAM memory.  This concerns me a lot as the new iPhone 4 has double (512MB).  It concerns me as I currently have an iPhone 3G which doesnt function on iOS 4 and I do not want to have an obsolete iPad in 18 months.     
I have bought a  zenithink zt-180  Andriod 2. 2 Tablet PC   
I dont want to wait until this time next year for iPad 2, but I dont want to buy an iPad now if a new one is coming out around December 2010/January 2011.     
   
For those who have yet to buy but plan to, what are your advice?   
   
Buy Now? Or   
Wait?