I got a chance to try out Lexis-Nexis recently - to say that I am underwhelmed would be too kind. Let me see if I can catalog how it's been working for me:

• Slow as Molasses
• Power Search breaks on non-IE browsers

The latter one is simply amazing. Bear in mind that you have to pay to use this service - which again, is way, way slower than Google, and in the limited trials I've been able to put to it, it's certainly no better than Google. And to top it all off, it wants to (silently - it's not as if it warned me about browser issues) use IE rather than the browser of my choice. As I tried Firefox and Safari, I kept getting prompted as to what I should do with a DO file. As if I know :)

Finally, this just takes the cake: After I tried a Power Search using IE, this is what I got:

I suspect that my search feeds in BottomFeeder are just as (if not more) useful. At least they work :)