One of the most sensible observations on this thread was made by Wully. To paraphrase because I can't be bothered to look back for his post; "If we were voting for independence Norwegian style I'd vote yes, but we're not...."
I agree, we are voting between being part of the UK or being separate from the UK but a part of the EU, assuming that they let us in. What on earth makes anyone think that being a tiddler in a Federal States of Europe dominated by Germany and France is going to be better for Scotland than being dominated by the larger part of the UK? That seems to be the real choice. It seems to me most likely that entry to the EU would be conditional on us joining the Euro which doesn't fill me with joy either. I doubt that many residents of once great nations such as Greece, Italy, Spain and Portugal are too happy with the Euro either.
To return to the subject of Norway, yes we are similar in size and population but our per capita GDP is half of theirs. We would have to be pretty quick of the mark to double our performance to come anywhere near equalling the success of our Norse neighbours.
We need some hard facts such as what is the net flow of money between Scotland and the UK government. It has been commonly touted that Scotland is a drain on the rest of the UK. The Yes campaigners are using figures from an ex UK treasury(?) civil servant that suggest the opposite is true and that Scotland has been a net contributor to UK Inc. What is the truth say for the last 30 years? (about the time that I've lived in Scotland but that isn't intended to suggest that I'd make a significant difference

)
A number of people raise the issue of energy wealth as a source of revenue for an independent Scotland but then refer to renewables. I believe that the term renewables is largely used to refer to wind power which I see as a liability not an asset. Hydro on the other hand makes sense with our rainfall and it is thought in some circles that we are at the forefront of research into tidal and wave power. Tidal makes sense to me, at least until the moon disappears. We have a lot of coastline that could easily make us energy independent and possibly an energy exporter with the enormous benefit of not needing nuclear.
We need some facts, a decision in September shouldn't be based on wishful thinking, propaganda or in some cases a belief that Braveheart is historically correct.
If the vote is a Yes, however unlikely that currently appears, how do we set about establishing a government that is not a replica of the stupidly expensive, inefficient and incompetent system that is currently in place in the UK and largely replicated throughout Europe including the current Scottish Parliament? How do we end up with a system more akin to that in Hong Kong, (population 7.1 million in 2011) so good that even the Communist Chinese government decided to leave it largely alone when they resumed control. A government that costs far less than 25% of GDP rather than the >50% of the UK system. How do we ensure that we don't have another Socialist disaster along the lines of Wilson/Callaghan and then Blair/Brown? Promising the electorate nirvana whilst bankrupting the country to try and provide it isn't practical in the long term.
I married a Scots woman and we chose to make our life in Scotland, I've never regretted that and don't expect that I ever will but Scotland as a separate state being a part of the EU is a depressing thought. I'd far rather be a part of the UK out of of the EU, free of the obscene cost and frequent stupidity of the EU Commission. As part of the UK Scotland has always had a disproportionally high influence on the UK due to many factors. That includes the intelligence and creativity of some its people and the educational system that promoted their abilities.
Or maybe properly independent...........