Does ZCASH have better anonymity than Monero? Can I keep ZCASH on hardware wallets, like Trezor or Ledger?
ZCash has the functionalities of both, transparent and private addresses. The transparent addresses work publicly, while the private addresses work as good as Monero.
Yes I store ZEC on Ledger Nano S device.
The fact ZEC can be transparent or not, is a good signal for any future regulation.