I have experimented with alot of Buddhist meditation over the past year or so... but recently find myself being drawn back to Christianity, to explore that. I grew up as a Christian but I stopped going to church in my 20's. Now I'm my early 30's. I practice yoga, Buddhist meditations, and I'm interested in the Emerging Church Protestant movement (but I don't really live near that many Emerging congregations), and I read a fair amount on Christian theology, particular Dietrich Bonhoeffer.
After doing quite a bit of Buddhist meditation (regular meditation, metta-bhavana, tonglen- none with a guru/teacher, all self-taught), and biofeedback, I realized most of the misgivings I had about Christianity were really ego-projections from a troubled childhood. I found meditations on compassion to be very helpful at getting rid of alot of the negative feelings I kept having hanging around me. Indeed, it will sound very wierd but I realized how all that negativity was a blessing in some ways, as it was a unique experience to suffer like that, to see the things that made you different from others also could connect you with the suffering of other people so you could identify with them, if you opened up to it.
I also had a somewhat religious/spiritual experience, where I felt a sense of grace in my life, but I also had feelings similar to "kundalini syndrome" very wierd body sensations that would come and go every few days, and a few days where I just felt a sense of nihilism. I was assosciating with some Buddhist also that had very nihilistic views on life, and this negativity was rubbing off on me. I felt troubled and I asked some Christians I knew to pray for me and I prayed myself, and I decided to re-read the Gospels and they seemed to connect wiht me in a way that they had not in a long time. So now, I'm sitting on the fence a bit.
I think there are alot of interesting perspectives in the Buddhist tradition but ultimately I'm not sure Buddhism is "all true". I think Buddhism brings a unique perspective to religion, but I also see alot of flaws in it, in some cases deeper flaws. The ugliness and cold brutality of Zen in WWII, or the complacency that sometimes exists in Theravada countries regarding social issues (giving aid to the monks when there are other people in those countries that could use the money).
For a Christian, "enlightenment" is not the main purpose of the faith, because acording to Christianity, God already bridged the man-divine divide. Theosis is "Christian perfection" ,and I'm not sure "non-dualism" is all that important, I think Christianity is much more the path of purification and connecting with other human beings on a real level, not just a mystical level. Theosis is just becomming more like Jesus in every way. It's all about other-power, and that's the simplicity of it. As a teen I never understood what faith is, it's surrender, putting aside the rational mind that always wants to know more, wants to explain the unexplainable and will never find those answers. I also think the Christian faith has some good insights on the importance of love, something that seems absent in the average American Buddhist- no doubt that's the reason my favorite bodhisattva would probably be Quan Yin, I think that kind of mental image helps me connect with a part of myself that wants to be listening and compassionate, but I was raised in a home where men didn't feel much of anything.
One thing I think might be a problem with "Integral Christianity", as already mentioned before, is that unlike Hinduism, Christianity doesn't see the manifest world or the sense of ego or self as inherently evil or degenerate, nor has theological quietism generally be understood as a Christian ideal (as mentioned earlier, Christ came to earth to render wisdom as foolishness, not to affirm the wisdom of men), even in Sufism fana (annihilation) is understood metaphorically and is counterposed with baqa - living with God. Yes, the seperation into the manifest world causes suffering but Christians tend to believe it exists for a purpose, a purpose that theologians have speculated on of course. Maybe Mahayana Buddhism comes a little closer to this understanding but even then, it is still somewhat impersonal compared to monotheistic understandings of God. Buddhism, being what it is, generally doesn't like theological questions.