Hello guys, having been here for a while now, I feel that having a higher percentage of your portfolio on bitcoin and maybe the rest 30 or 35% on already good and established altcoins like ETH, BCH, Stellar, brave. BNB, Vchain, etc, is a good way of staying away from useless projects. I have come to an understanding that running after new promising projects always leave you heartbroken in 97times, and running after IEO to quickly make up for past losses lead to more havoc on your fund. So stick to the safe zone.
In my own opinion, Bitcoin is and will always remain the best coin to be in our portfolio because it stands a better chance of recovery in cases of bear market than any other coin. Also in term of long term holding it comes first as well. But, however it doesn't mean holding altcoins is a bad decision rather a certain proportion is also good. In terms of altcoins, due diligence is highly recommended for any altcoin because most don't have what it takes to last long term. Also, most IEO tokens aren't worth holding because most are a product of hype.