[jeff markham]

i'll assume this is stereo post prod.. not surround?
to me, post-prod is all about getting 100 pounds of
audio into a 10 pound sack ;-)

as such, i would focus on:
ambience
phase-accurate EQ
compression
stereo-imaging
limiting

Ambience...
delays: the Digi short/medium/long delays are just fine ...
reverb: Digi ReverbOne, Revibe are excellent. in post
prod, you *must* have a good convolution reverb to
model a variety of spaces.. and the Waves IR/1 (full
version) is the best of the lot .. and the Acoustics.net
library is a wonderful resource. The Trillium stuff is
OK .. but sounds thin when compared to the IR/1 .. don't
know why .. don't need to ;-)

EQ:
The Digi EQIII series is very good .. but if you don't want
to get into wicked phase problems late in the game, the Waves
LinEQ is great .. and has deep cuts to trim out problems.

Compression:
Smack! is a superb compressor .. extremely versatile. side-chains,
models a variety of classic compressor designs.
For wide-band taming, the Waves C4 is excellent as well.

Stereo Imaging:
Waves S1 ... look no further

Limiting:
I'm very fond of the L series from Waves (L1, L2, and L3).
I bounce back and forth between the L2 and L3 because sometimes
the multi-band limiting of the L3 can unbalance a mix.

if you have stuff left over ..the transformer bundle from waves
has a lot of goodies for Fx .. and Melodyne 3 is the best of the best
in terms of pitch/formance and timing editing.

if you have any more left over .. please send it to me ... i don't have
a budget .. i have a wife ;-)

jeff