I tried volatility 100 index on freshforex. I have never traded synthetic indices before but I found that I was able to trade during the weekend 24/7 . I used a cent account which had dropper to 0.14 cents in marking and I managed to make a dollar . Synthetic indices are prone to market news manipulation and respect price action trading. So far I haven't encountered any big problems in trading these synthetics . My overal trades I managed to withdraw a substantially good amount of cash from the trades I did on the pair . I do have a problem with the spread on the synthetic pair it's a bit too big and if possible they should try reduce it to make it more favourable .