It's better in the UK to a degree. (shame about the weather...
Maybe worth trying out Portugal. (nice weather) and
Except for startups the main expense is the cost of living of founders (most of which turns out to be taxes...).
Portugal has a new tax regime for non-habitual tax residents. Which is a a flat tax rate of 20%. You can apply for the regime if you have not lived in Portugal for the last 5 years, and your job consists of a high-value-added activity of a scientific, technological or artistic nature. And the benefit lasts for 10 years. See: http://www.ibc-madeira.com/Tax_Regime_for_Non-habitual_Resid...
The main expense is the cost of living of founders
The cost of living in Portugal is lower than that of the UK, or Austria.