We did TC Premium, it was not bad. We were pleased we did as the cattle class seats looked very crammed (moreso that cattle class in Virgin or TCD). The luggage did come of first and we got an extra luggage allowance. It was nice having the seperate check in as well.
I did not notice any real difference in the fod, but as I really hate airline food I am not the best judge of that.
If we do go with TC agian then we wuld use PE, not becuase it is that great, but because the economy looked very cramped.