Love, love, love Absolute Black oval rings. They feel fantastic to pedal.
Unfortunately I could not get the 46/30 ovals to shift well with an 11-42 MTB cassette on a road bike. This setup is completely out of bounds, way beyond what any manufacturer supports and the ovals were just a bit too much. I went to round rings and they shift better but I'm saving the ovals for another project because they feel so great to pedal.
-Tim-