I am wondering what most of you do to lock up your bikes when briefly unattended. I have a Seven Axiom SL and Evergreen SL, both Ti frames. Have about $7k invested in each bike. My gf has a custom Trek Silque SSL, cost over 6k. We have been going on a lot of rides that involve stopping at local brew pubs and such. Some in city of Chi. We have been using Master cable combination locks, about diamater of a Bic pen. Seems like an ok and lightweight option for these brief stops. Some of those we ride with dont even secure their rides, just try to keep an eye on them. What other options are there?