For the RX 470 (specifically the Gigabyte G1 4GB version), I have found that both miners give very similar performance (~542 H/s for Claymore, ~535 H/s Wolf) on Windows 7 SP1.
On Linux, Claymore does not distribute a binary compatible with these cards, while Wolf's again gives ~535 H/s.
Given that Claymore's miner takes a 2.5% cut, it nets you 542 * 97.5% = ~528.5 H/s, or slightly lower than Wolf.
All these numbers are with stock settings. Claymore's is easier to use (IMO), but currently limited to Windows, while Wolf's is open source, available on Linux (and I suppose OS X if you can figure out how to compile it), and potentially a little more lucrative.
I have not compared power draw between the two miners.