not the best intro in the world! Haha theres a 101 threads on here about the differences. In the end it comes down to personal choice really.
I would take a TD5 over a Puma anyday but thats me. I like the TD5 because its pretty easy to work on, not too many electrical things to go wrong and the ones that do are quite cheap.
Ive driven Pumas and just not a fan, i love my 5cyl engine