Based on their website, it is open source, so that's a good thing. Though I don't know if some devs actually checked their code and make sure that there's nothing malicious in it. I'd personally still go with MyEtherWallet though; or better, a hardware wallet like the Ledger Nano S.
https://github.com/TrustWalletHey, this is Viktor from Trust Wallet team!
Thanks for doing research, I really appreciate and I wish everyone did this. Trust Wallet is open source and we have done security audit that's available to anyone: http[Suspicious link removed]c-checklist.pdf.
Initially, I build Trust functionality for myself to autodetect any ERC20 compatible token on my wallet and then made it available to everyone. If you are curious how's that done check out GitHub repo. Trust Wallet mostly focused now on providing easy access to dApps (decentralized applications) via web3 browser and collectibles (ERC721).
But if you are looking for ERC20 wallet then Trust would be the best pick for you.