Is Bitcoin Cash fast because of greater capacity or with low competition to get into blocks?
Better options for cheap + fast transactions: Litecoin or Raiblocks. Litecoin has a great history and community is ready and willing to innovate. Raiblocks has a good story too: doesn't waste the currency's OPEX on proof-of-work, accounts don't face contention on serialized resources like a linear blockchain and delivers no-fee transactions. No crazy experimental-and-vulnerable-to-differential-cryptanalysis like IOTA.
Both, they have much less transactions and their block size is 8x larger so they can do 8x more transactions/sec. But still pales in comparison to Visa’s throughput.
Better options for cheap + fast transactions: Litecoin or Raiblocks. Litecoin has a great history and community is ready and willing to innovate. Raiblocks has a good story too: doesn't waste the currency's OPEX on proof-of-work, accounts don't face contention on serialized resources like a linear blockchain and delivers no-fee transactions. No crazy experimental-and-vulnerable-to-differential-cryptanalysis like IOTA.