I honestly think the iPad size is spot on - a larger one would be too clumsy and a smaller one would sort of defeat the purpose of a device a bit.

It might be a bit on the heavy side (and I had to think about that) but I guess it is a trade off with battery size - and I'm pretty pleased with the battery life.

I'm not a particularly enthusiastic smartphone user (I have both a work iPhone and a personal Android phone) - I use the iPad far more than my phones.