I really hope Claymore issues an update soon.
I'm getting far less shares with the same hashrate using Phoenix Miner than I was with Claymore's legendary v15 - Something around 15 percent less shares.
Sad times at the ol' rig farm.
I'm still getting about the same amount of shares with a combination of TeamRedMiner for AMD and Claymore 15 for Nvidia as I got using only Claymore 15 for AMD and Nvidia. So you can try TeamRedMiner. Seems very stable. Claymore 15 crashed with one of my Nvidia rigs and the same rig with AMD cards kept mining in TeamRed. Isn't that something! I still had to reboot the rig because the Nvidia cards needed it. So far I am pretty impressed with TeamRed. Just wish they had a good monitoring solution like Claymore's Eth Manager. I am using another monitor but I don't like it as much as Claymore's. The Claymore monitor had a more organized layout, showed total combined mh/s and a few other things. Oh well.
If you want the same Miner for both Nvidia and AMD and also stable like TeamReadMiner... you should make a try to lolMiner... With it you have all in 1 miner that is always fast for movements too.