It's best suited for in-house counsel that wishes to stay on top of recent case law and labor decisions. It's also great for labor & employment attorneys working at firms to have a high level overview of key issues. The chart builder and Daily Labor Report are the best resources for in-house counsel. The content is easy to flip to in-house client teams and department heads along with individual analysis and suggested action items.
Lexis is really just best suited if you don't have access to Westlaw. Overall, it it does get the job done, but the user experience is not the best. Searches could be better indexed and relevant information (e.g. cases, statutes, issues, past searches) aren't as easily accessible. If you aren't doing a ton of additional research it is good for blue book citations
Lexis Advance is way better in terms of usability and search features. The content is pretty much the same for both platforms except in Litigation where WestLaw is much stronger than Lexis. However, the Feature functionality of Lexis is a lot better to keep users efficient and productive and collaboration is also good.