Vengeance Multiband Sidechain is my go-to sidechain. Can't live without it.
Same here - it's a great plugin that gets used in every one of my dance tracks. Philta is good, but I don't use it much, since I have other filter plugins that I prefer (e.g., FilterFreak, Volcano). I picked up GlitchBitch and TapeStop for dirt cheap, but I'm not that crazy about them TBH - they're definitely better for live performance than for studio use. I owned their MB Compressor, but sold it after FabFilter released Pro-MB. The Vengeance MB Compressor has a great interface (though, not nearly as good as Pro-MB's IMO), but everything seems to be over the top. Getting transparent results from it was pretty difficult, but it did have a lot of character and is really designed to get dance music pumping.