I personally have bought quite few, usually the Ethereum based ones mostly do good. Had some disappointments though. Wasn't very successful with the wave based ones ...
What about you ?
I've bought a lot of coins, but I just bought a coin that I think is good with reading whitepapers, looking at travel plans and see the team that supports the coin, because if you do not read and seek information then you will get losses because the coin you buy is not profitable , so before buying coin learn and understand for what coin is made so you do not lose money.