If you need fast and cheap altcoin transfers, TRON TRX is the right choice. TRX transfer price is only one TRX, so you pay for transfer $0.129. Every TRX address is granted 600 free bandwidth units daily, it is enough for ~6 free transfers daily. TRON transfers are also very fast - ~ 1 minute only. And you can use Tether USDT TRC20 stablecoin fast transfers on TRON network, but transfer price will be much higher.
TRON TRX wallet link: https://www.tronlink.org/
Multiwallet with TRON TRX: https://www.safepal.com/en/
I used to be a Tron fan, yes, the fees are quite low. Even when we want to transfer USDT, for example, with the Tron network, it is quite low. And it is an option when you want to transfer it, especially from exchange to exchange.
However, since there is BSC and Solana, the choice of network for sending is much more varied. Of course, that could still be an option. But usually I will check first which one has a much lower fee and where I transfer it, as well as the network availability on that platform and also the destination platform.
As for investment, TRX, I think I have enough to invest in this coin. I invested on this coin for a long time, but the result? It doesn't even appear to move like other old coins. The price movement is very slow. So if you are a beginner and want to invest, it is better to choose other top coins whose prices can grow and rise well. SOL, BNB, ETH are the best in altcoins.