Ardross, I'm very much into organic food but I would agree that it is not necessarily the fact that the food is organic that provides the flavour, etc.
With meat and poultry production, I think enhanced flavour comes from a) good animal husbandry, whether it is organic or not, and b ) the fact that the organic farmers often rear animals that produce good, flavourful meat, eggs, milk, whatever, rather than rearing animals for quantity/speed of growth. I remember very fondly the eggs that came from the chickens my father kept - they were not, strictly speaking, organic but they were VERY free-range and they were also "old breed" hens (Marans and Barnavelders). They produced wonderful eggs.
The same is true of organic vegetables and fruit - the enhanced flavour comes, in my view, when the producers go back to basics and grow varieties for flavour and texture, rather than for quantity.
Freshness is a key for fruit, veg and dairy but not necessarily for meat. To get a good flavour from meat, it should be hung for far longer than is commonly the case now.
Not all organic food is good, or well-produced, as Julie has pointed out in the past. Equally, not all of it is any more flavourful and nutritious than anything else that is on sale. I have to say, I also have a fundamental objection to buying organic fruit, veg and meat that comes from outside the UK. To me, it defeats the object.