The 'No connection' doesn't seem to apply for Live accounts. Furthermore, the price feed seems to be better on the Live accounts. For example, sometimes, there is no price movement during certain times (for example, 06-07 PM & 03-05 AM, GMT) at the Demo accounts, while there actually is a price movement on the Live accounts (the price movement is very small though).
I was a bit skeptical towards using FxPro after trying their Demo account for some months with frequent 'No connection' messages; however, I was positively surprised that this didn't occur on the Live account.
Whoever said money can't buy happiness didn't know where to shop.