Bitcoin is a pioneer in crypto-currency world, yes probably they're some triggers of what called bubble, but imo this is not so close to the truth. About ICOs market I could say that most part of this one is a big bubble, hyped so much. I prefer searching good and real value projects in ICO field that could solve some crypto-field problems such as transactions speed, security, data-storage and so on. I found interesting project called Kelvin Blockchain, this project could affect on transaction speed solidly