It depends on the keyword you want to target. Check the local search volume in the Google Keyword Tool, and target that term. Make sure the site is set in Webmaster tools to be targeted locally. It is no different from any other keyword.

I find the analysis tools I use now are pretty much limited to Powersuite and seomoz. I don't use auditing software that much, and therefore haven't explored Website Audit to its full potential, so won't be able to give any feedback there.

I strongly suggest you download the software and try the trial. They also have great support. I've made many suggestions and reported bugs and have always received timely responses.

I've used tonnes of SEO tools, and powersuite pretty much has a permanent presence in my "necessities" collection. SEO Spyglass is far more powerful and useful than any other tool I've used (and I've tried many). Ranktracker and LinkAssistant are handy little tools I use every day too. Don't use Website Auditor much.

In short, it beats the other SEO junk software out there.