Nowadays, USDT is now based on or supported by a lot of blockchain networks such as Binance, Ethereum, Omini, Tron etc and as such a good number of wallet applications like Trust wallet, Tokenpocket, SafePal supports a lot of these USDT on different networks. Returning to your question, I don't think there is any wallet which is better than the other, because those wallets be it Trust wallet or Tokenpocket are always improving and supporting more blockchain networks so as to remain relevant to users. Therefore in my own opinion, you can use any but If you want to separate your tokens according to their blockchain networks, then use Tokenpocket as it separates tokens according to the blockchain network they are based on.