Have been testing the new Claymore 9.7 on a 6 x 1070 rig. It is absolutely faster than before, but have had hangups on a regular basis. Lowering MC helps, but the avg speed will be a bit lower than Genoil (running latest from github). You have to calculate it a bit, since the dual mining (DCRI 20) will give some additional value, but you'll lose 2% because of dev fee.
The main advantage of Claymore is that it will restart itself, for Genoil you need to use a restart script.
To me it seems Genoil is the better choice for now.
7 x 1070 rig here, i've found that if my clocks are even slightly too high it doesn't matter which miner i'm using the rig just hangs forever unless i restart it remotely via SSH, i'm using dcri 40 and i think its the best setting right now, its about 31.5Mh/s for ETH and 410 Mh/s for SIA, on claymore 9.5 it was , more like 29.8/390..
Whats your power limit and clocks if you dont mind me asking? i'm on 125pl/0/1400.
These are pretty good numbers, Here on 115W, dcri 20, Claymore 9.7 30Mh/s and 300Mh/s SIA. Not very stable, have to lower my OC more. Stable with Genoil 0.11 (MC clock 200 down from Claymore) and gives me 31.5 Mh/s