Binance market in my opinion is very good because it has the biggest users right now, and for good altcoins for investment like eth, bnb, link, dot, xlm are still very good to buy, maybe you can find out better than this.
This year Binance is still the number one exchange in this market and there are plenty of low-cost investment options available to investors right now. I am always looking for new coins in this market and I think DIA, LINK, YFI are good options for long term investment. However, what I'm most worried about is the DeFi bubble because if it bursts then the market will be very bad.