As the market for forex brokers in Austria and the rest of Europe is generally quite competitive, spreads tend to be fairly low, in particular at the largest brokerage companies. However, keep in mind that spreads vary even within the same forex broker. Oftentimes, the best clients with the largest trading accounts get the lowest spreads, while the smaller clients have to accept higher spreads on the instruments they trade.
All forex & CFD brokers that operate out of Austria are regulated by both the Austrian Financial Market Authority (FMA) and the European Securities and Markets Authority (ESMA). This means that they are fully compliant with all securities laws in Europe, and can be considered reliable and safe to trade with.