I also use Coinomi, because it provides private keys, has an active support and two exchangers. Some aspects could be improved like order history , that is completely missing, or handling of ETH-tokens, but I don't know a better multicoin wallet with same features.
Coinomi is closed-source, which is a dealbreaker for me. It's also only available as a mobile wallet (Android only).... and I generally don't trust mobile wallets. I used them to get my BTG, but that's about it.
None of the multi-coin wallets are great. Exodus and Jaxx offer desktop multi-coin wallets, but they have terrible security and privacy. No in-wallet encryption/sanity check before sending. Jaxx doesn't even have a password, just a 4-number pin. And I've heard the code is dodgy as well.
The best option at this point is to get a Ledger Nano or Trezor. They are integrating a lot of altcoins these days.