i've got the soundtoys bundle (native) and it is very nice and sounds very eventide-ish. I've owned a 3000 DS/E (still have it), 4000DSP, and an Orville. Soundtoys is one of the few plugins that don't sound like software. When you run something through an Eventide, it instantly sounds awesome. The Soundtoys aren't quite on that level, but very very nice and absolutely worth what they cost.
I also wish that either Soundtoys or Eventide would release a killer multi-effects package on the native platforms. Put it on ilok, protect it, and they would sell a ton. I know about 10 people off the cuff that feel the same way.
If Eventide made a plug that ran on a native Mac system (or a UAD-2) I'd order it immediately. If it was their flagship algos plus surround verbs I'd spend loooots of money on that without second thought.
+1 on Sound Toys being an excellent set of native plugs!
I wrote them a couple of years ago about RTAS support, they said: "thanks for the feedback, we're looking into it". I think if they want Anthology II to survive, it's time to move over to native land (in addition to the TDM stuff).
Personally, I'm not so hot on using the Factory/H3000, it takes too much time to get delays right and for pitch shifting there are better alternatives too, but I really love and regularly use the Eventide Reverb. Omnipressor is great, and the big channel strip is great too. I hope they really get the message...