I really liked the gauges on the HD lights. I found with normal lights my 814 had less low end oomph, and I also liked the higher tension on the treble strings which were more tolerant to how I play (the lights on the treble strings didn't have a real sonic difference to me, but I liked the stiffness of the higher gauge for playability).
I did throw on a set of John Pearse 710NM's
710NM New Medium - Even Tension Set - perfect for Fingerpickers .013, .017, .024, .032, .042, .055
I loved these. They had all the low end, very similar tension, and in general made the guitar sound way more alive than the coated elixer HD lights.
I'll miss the longer life of the coated strings, but I'm a tone hound and I don't think I'll go back.
Here's the comparison of the gauges
.013, .017, .024, .032, .042, .055 (JP 710NM)
.013 .017 .025 .032 .042 . 053 (Elixer HD Lights)