I use both plugins and hardware. There are very few plugins I like, but those that I do like I use all the time.
Favorite plugins:
Steve Massey: Tape-Head, TD5 delay, L2007 limiter,
CT4 compressor, VT3 eq
PSP Audioware: Vintage Warmer 2, MasterQ
Elemental Audio (now Roger Nichols Digital): Finis, Eqium, Inspector XL
That's really it as far as plugins. I findit possible to do virtually all of the plugin work I need to with the Massey and PSP plugs. And that's about 90% Massey plugs at that.
As far as hardware, my favorites are:
EQ: Manley Massive Passive
Compressors: Empirical Labs Distressor, Avalon 2044, Aphex 320A (for super invisible gain riding)
FX: Lexicon PCM-91, Eventide
Reverb 2016, Kurzweil KSP-8
You can do it all in the box, but I personally prefer mixing outside the box, or at least summing outside the box. It just sounds better to me, and no plugin can do what great outboard can as far as mojo and color.