The Custom Lights give you a fantastic balance of sound quality and ease on the fingers and the guitar. That little extra above the .10 makes all the difference.
They look fantastic and last easily twice as long as any other string on the market, except the Elixir's which are 4x the price and in my opinion sound dead out of the box.
The New Martin Longevity strings if they didn't boost the price on them would be fantastic strings and would be my choice of strings.
I have actually put these strings on peoples guitars that normally play Elixirs and they have switched because of how great these strings sound, how long they last and how great they look.
(I play them on a 1993 Limited Edition Martin D-28 1935 Herringbone Re-issue.)
Buy them, you won't be sorry.