I think you can try Polygon MATIC blockchain to send your stable coin. My experience send USDC or USDT to other wallet, fee for TX only charge 0.000187115 MATIC or $0.000175.
USDT polygon is good enough but remember that USDT polygon has not yet massively accepted by so many exchange sites. That gives a difficult way to get good liquidity on the market.
There are only a few exchange sites that were supporting it dude. Im thinking that if USDT TRC is far better than polygon because all of the exchange sites already accepted USDT TRC.
The tx fees is so small but what about liquidity?