I choose online wallets and prefer to manage private keys myself.
Luckily most of altcoins I use have such online wallets, like ETH, Doge, LTC, Tron, Waves.
Just keep in mind to always store your wallet private key safely!
It's very important, because nowadays lots of malware hunts private keys.
Obviously use antiviruses and keep most of software and web pages closed while copying your private keys through the clipboard.