I have got a nice return which is similar to that at ethereum. When it was still in it's early stages, I bought some ethereum when it was still l around less than 1$ in price. Looking at it at the time that I sold it, the price was 0.143 BTC and I'm glad I sold it at that time. I held it for a year or two though. I'm lucky I didn't lost it while I was waiting for the right moment to sell.