I'd like a couple of opinions from experienced traders regarding the difficulty of trading certain instruments. Futures aside, and I realize they are fast and tough, what is the opinion of people here on the difficulty of trading high beta equities vs ETF's? Do you find it more difficult to trade something like GS compared to a fast ETF like DIA? Are they very similar under similar circumstances? Sorry if it seems simplistic, but I'm in the process of rediscovering some trading skills I once had, and need the most insite possible.