modelFor is used constantly, the extra normalization and string splittin...

...g was causing measurable slowdown.

before:

![screenshot 2014-08-20 10 34 19](https://cloud.githubusercontent.com/assets/1377/3983530/e3ad5b44-287f-11e4-8edb-31f84e9efaf2.png)

after:

doesn't even show up.