[eluser]Phil Sturgeon[/eluser]
It kind of depends really. I used to be the sort of person that would leave the view for NOTHING but output tags (no PHP at all other than if/foreach).
It kind of makes sense to do it in the model if you know thats the data format you will need to use everywhere, but if its just one place it needs to look different, then its a job for the view. It all comes down to which is easier, quicker and which way involves less repeated code or server load.