There is some wallet that is open-source, good for buying/selling of coins and tokens. It is easy to use but with minimum security and you won't have a problem using it if you prevent human error though. An example is Trust wallet.
A software wallet can't be compared with a hardware wallet in terms of security. The hardware wallet will always come on top. Since you mentioned Ledger, that one is very easy to use and set up. Hardware wallets aren't meant to target tech geeks, but the regular Joe looking for a safer way to store his private keys than in a hot wallet.
We have some with good security but can only take a few sets of coins/tokens, not that easy to use due to security priority but you still need to prevent human error though. Ledger wallet
Bother Ledger and Trezor support 100s of coins and tokens including various ERC-20 tokens. Some natively, others by connecting 3rd-party wallets. There is no difference in the number of assets a Nano S and Nano X supports, only a difference in the internal storage of the device. But you can use the same coins on either one. With Trezor, it's a bit different. The Trezor T and Trezor One don't necessarily support the same assets. Monero is a good example. The Model T supports it, while Trezor One doesn't. for example.
I like binance because security it provides to my coin and fee is reasonable unless you don't go out of binance network. I keep some of my coins in electrum wallet but I remain worry about there security all the time.
You are comfortable with keeping your coins in someone else's wallet (that of Binance) but you don't entirely trust the security of Electrum? Electrum (hot wallet) is as safe as the system you run it on. If you are a cautious and security-conscious individual with a clean OS, you have nothing to worry about. If your system is vulnerable and full of malware, that is your fault, not that of Electrum.