Re: Switching to Unix - But some questions first.
The "main fork" of OpenOffice is now Apache OpenOffice, and it's being supported by IBM (the Lotus Symphony product was a fork of OpenOffice.org; with the sale of Sun's assets to Oracle and all of the politics involved, it wasn't on for IBM to fold their mods back into main). It's still free (gratis and libre) and it most definitely not abandonware. It's just something Oracle couldn't figure out how to monetize. IBM, on the other hand, is getting its kicks out of "the platform agnostic desktop" -- the latest versions of Notes, along with most of their development and administration tools run on the Eclipse platform, and Symphony (OpenOffice) is tightly integrated (and available separately for free, if you want a brand name) so that you can be an "IBM shop" whether you prefer Windows, Mac or Linux (or need all three). So you still have two compatible choices for productivity software.
That said, my WINE/Lindows/Linspire experience has been... let's say variable, shall we? Some things work; some don't. Things that are written to the Windows APIs tend to work; things that try to bust through to the hardware tend not to. Unfortunately, games tend to be the worst offenders, usually for performance reasons (the odd millisecond hiccup when you're typing a memo means nothing, but the same delays can make game play unpleasant). You can always dual-boot -- a clean, games-only Windows install will likely perform better than either a Windows emulator or a Windows install with all of the accessories.
“Beware of bugs in the above code; I have only proved it correct, not tried it.” --Donald Knuth
"It was as if its architects were given a perfectly good hammer and gleefully replied, 'neat! With this hammer, we can build a tool that can pound in nails.'" -- Alex Papadimoulis (on TheDailyWTF.com)