It is actually depend on the project, those that I had done research and their previous project was successful one, I will throw more of my money in it.
Yes it is depending on the project, but I think that it is also depending on your budget. If you have a good amount of money then you will defiantly like to invest more money in a good project. I think that we should invest such amount of money in icos which we can easily afford to lose, because we are not sure that either we will make money from ICO investment or will even lose our own investment.