256 or 512 ram doesn't matter to me. My iPad is fast for what i use it for ( and i don't see how it could be any faster )
Watching movies
Streaming movies
Sending Emails
Surfing the internet
Storing photos
taking notes
setting appts on iCal
Yeah the iPhone SPEC wise is faster BUT will you use it? Some will, Some wont...The 512 is to accommodate its other features ( video, camera, etc )
For instance...I never watch movies on my iPhone, The small screen makes it really pointless unless i am EXTREMELY bored...
I dont lay in bed or sit on the can and surf the net on my iPhone because once again, the screen is small and its not that enjoyable. I DO hop on the net if i am out or need to look up something really quick. My GO-TO device for surfing would be the iPad and if you prefer surfing on the iPhone rather then the iPad, then your seriously retarded....
Sending Emails i do on the iPhone, but the iPhone and its 512 ram will speed up emails how? It wont....Everything will be at the same pace as the iPad
Storing photos, The same as the iPad
Taking notes on the iPhone? Yeah, really QUICK notes that i can later update via my iPad.
Settings appts? yeah, When i am out and about...which later will sync to my iPad..
I dont know what some people use there iPad for but as stated, for what i do, My iPad is fast and adding another 256mb of ram will not improve anything for my needs.
Now the iPhone has options the iPad doesnt ( 720p video for example ) which that 512 ram will come in handy...
Some of you people expect way to much from the iPad, seriously..
For what it does, it does it well.