The next big crypto currencys to hold onto

I have been mining for a couple years now and one thing I have learned is to hold. I could have made potentially hundreds of thousands of dollars in ETH ETC and zec if I had just held onto it. Instead I sold mine weekly to help pay for expenses or to just have money to spend for whatever man was I wrong you should always hold if it is possible for the coin you are mining to go way up. I have spent a good amount of time researching what could be the next big payout. First bitcoin still has a lot of potential to gain much more value but unless you have a lot to spend then your gains will be minimal. I'm looking for a coin that is around the dollar range that could go to hundreds if not thousands of dollars, but what coin could that be there are so many and most of them seem to be determined by us and how much people what to put into it. After mining for some quite time I have realized a lot of this is manipulated by the buyers and sellers and if there enough people buying and selling the prices just continue to go up. I have noticed that a coin will go way up then someone with a bunch sells and causes it to crash "pump and dump is what people call it and it almost just feels like a scam. When looking for the right coin pay attention to how popular it is, how many people are mining it and also the projects lined out for it. I personally have been looking into zclassic since its fairly popular and low cost and difficulty right now, also since ETH is going to change soon there will be a lot of big mining farms changing to different coins I betting on zec but even that is getting so high in difficulty the profit is getting smaller by the week. So what is left when the biggest coins are to high for regular miners to make money? I think zclassic, Zen cash, even etc is great alternatives. Recently I have been mining zclassic and Zen cash and I plan on holding all of them until the price skyrockets from farms switching over to them and driving the price up that is when you will make great returns holding seems to be the best way to get some really good payouts if you can afford to hold but in the long run I believe all of these coins are going to do very well and if your someone who held all there coins for a few years then you could possibly be looking at hundreds if not millions of dollars. So if your a miner and Zec, eth, bitcoin is getting to the point of almost no profit try some alternatives, hold if you can and I almost guarantee in a year or two the smaller coins I mentioned will payout huge returns. I look forward to seeing what other alt coins do and the potential they bring for better profits and gains for us.