Imagine

There is a demo or trial version?

Wish there was :(.

I looked all over their webpage with no luck, so I guess there is not.

I am always interested in physical modelling - I have all of AAS's instruments. Are there any clear advantages with this over them?

I believe this is more intuitive than ASS Chromaphone's interface and this allows monophonic and portamento. But, without a demo version is impossible to know if this plugin will justify its price. Lets wait to the developer release a demo or trial version.

I guess I am just used to the Chromaphone interface, and pleased with what I can get out of this as well as their string and synth modeler. The only thing I am *not* pleased about is how these three kill my CPU.

I agree, unless there is a demo - to test out if this is actually worth the price, or additional purchase, I will probably pass, or wait for a sale.

only my first day playing with, so take this with a grain of salt.

I, too, own all of AAS's brilliant synths. So when I got a discount coupon from expressive e for buying a touché se, sizing up the two synths that expressive e has (noise and imagine), I decided to indirectly support AAS by buying imagine...
it IS very similar to Chromaphone 3 and even String Studio 3, which makes sense, but there are some updated functions (who knows? maybe they're be in Chromaphone 4?). All three are bi-timbral. All three use physical modelling. All three sound amazing.
In Imagine, there's an MSEG, for modulation, which the others don't have. And there are some more sound-shaping options for each oscillator. But they're not light-years beyond Chromaphone, from what I can see.
Honestly, I think in retrospect I would have bought Noises which, though also a physical modelling synth, is a more-different (is that something you can say?) synth from AAS's products than Imagine is. Imagine is by no means a bad synth. But I think, if you've got AAS's suite, it's redundant for now.
And, yeah, Expressive E should be offering demo versions at the very least...that's a no-brainer.

Is Erica Synths Zen Delay included?
The first image is Zen Delay.