I have in the past played HU microstakes with some degree of success. I've experienced the advantage of being able to put in a huge volume, but I'm also a bit tired of the high rake/low edge of these games. I would like now to shift my attention towards MTTs, but first I want to study the risk/benefit trade-off.
It is well-known that prize structure plays an important role there and high variance is expected in the results. However, I've also heard that MTT tournament provides the maximum ROI for the best players, so it can be worth it.
What I would like to ask you is, how big of a ROI is it possible to get from playing, let's say for the sake of example, €3-€10 online MTTs? Also, how much and what type of training would be needed to achieve different ROIs?
Finally, if someone has some statistical data (like an estimation of the standard deviation of the reuslts), that would be appreciated as well.