Yeah, I've done my own demo tests prior to starting PipCop.com, and noticed a lot of this "up-up-up-crash" behavior. Therefore, I really won't put anything on a live account until I have seen how it works, and seen it work over time.
RoboMiner is one that I am impressed by. Very small, steady wins, and very little
drawdown 
at any time. Even if there were a loss, it would rarely be much larger than a few winning trades. I would like to see it get to the 90 day mark so I can put it on a live account.
Of course, when I do put these on live accounts, I'll start with a micro account. Only after it performs well starting with $50 and does so for 3-6 months would I consider adding any more equity to the account.
The
point 
of Forex is to be profitable. Throwing large sums of money into accounts and then losing it all is how most people lose their money. There's nothing wrong with being cautious, starting small, and having a good, safe, long term plan. For me, it's a 3 month plan, then 1 year, then 3 years. I prefer to know it will be consistent for a long time, not just a few days.