Which Of The Two URL Structure Is Better?

In episode 256 of Semantic Mastery's weekly Hump Day Hangouts, one participant asked which among the two URL structure is better.
The exact question was:
Another question please (: About URLs structure, which one is better? www.site.com/city/service-type or: www.site.com/srvice-type-in-city Thank you!!
UltraDNS Client Redirection Service
http://www.site.com/srvice-type-in-city
