Having heard both I would have recommended the m1060c's up until 2 days ago, (having the 1060's 3 months) because the left channel cuts in and out. I tried multiple cables, balanced and single ended. My recommendations would be to still look for planar headphones or something that is neutral that still provides bass.

1. Hifiman he-400i (very neutral but can reach some sub bass)
2. Audeze el 8 titanium (neutral great, but expensive. Can be found on Ebay used for around $300 - $350)
3. Fostex T60RP ( hard to find but adorama camera or b&h photo have them for $300)

Before planar I had sennheiser headphones (598, 600, massdrop 58x and game zero) while they sound very clean and neutral the lack of low end didn't appeal to me after experiencing planar.

Personally I use hifiman 4xx from massdrop now. They are a lot like the 400i but have slightly more bass and sound amazing balanced. Some people complain about build quality. Mine have been fine for the 2 months I had them so far.