I would personally recommend the Google V8 engine or the Mozilla SpiderMonkey engine, both are modern actively-developed javascript engines. There are several JS-Lint v8/spidermonkey implementations online if you do a few quick searches.
Another thing to consider is whether you want to use JSHint or JSLint, JSHint is a less strict implementation of JSLint. People tend to ignore some of the JSLint suggestions, so having reviewbot open issues that people will ignore/drop might not be ideal. There are certain cases where JSLint will not point out issues until previous issues are resolved.
However, if your implementation is modular enough, you should be able to interchange those two mark-ups with ease.