I am pretty familiar with IDEX, and have used it quite a lot for ERC20 trading, but having just discovered the Radar Relay exchange recently I was wondering if anyone who has used both could speak to the pros and cons. I understand that it makes use of WETH or 'wrapped ether' to fit with the 0x protocol, but that shouldn't really change the experience a whole lot, given that you already have to move ETH into the exchange smart-contract to trade on IDEX. The UX looks nice, so I guess I'm most curious about snappy Ledger integration and order matching. Better? Worse? Please let me know your experience!