For wallets I'm good and no issues with coinomi. I also have used blue wallet(lightning network wallet) for smaller transactions and I just liked it as if I'm contributing to its adoption.
But I dont suggest to keep large amount on coinomi, if you want to keep big amount then go with electrum or keep it on a hardware wallet such as ledger.
I use Coinomi especially for shitcoins and I'm very happy with it. No way am I going to bother running a proper wallet for anything I've got in there.
For the stuff that counts there are no shortage of other and better options.