Steven: I'll begin by saying I own a medium scale Distillate which I'm selling (PM me if you're interested) but its probably smaller than what you want if by full scale you mean long scale.
I love my Distillate. The only reason I'm selling is that I've got two Signature Basses and I'd like to acquire either an Alembic fretless, a Starfire to rehab, or one of John Brown's Frettedless basses.
Although a very nice bass, from what I understand the Essence has a single preamp with volume, pan, & filter controls.
The Distillate controls are volume, rotary pickup selector, low pass filter, Q switch, bass boost/cut switch, treble boost/cut switch.
From the topic board is the following:
The tone switches are bass and treble. Each switch provides 6db boost, flat, and 6db cut. The filter control adjusts a low-pass filter tunable from about 350Hz - 6KHz. Where you tune the filter is the cutoff frequency. Only frequencies below the cutoff frequency are passed.
IMHO. The Essence a very nice bass with a smallish body (think somewhat lighter weight) that I've recently seen going for anywhere between $1,600-$2,600 (the latter seems too pricey unless something special has been added). It's got that Alembic tone, but based on a brief experience I had playing one, I personally think it's somewhat limited in its flexibility (unless of course you're playing it through an SF-2).
In my opinion, I think you get a lot more flexibility and ability to experiment with your sound with a Distillate (they do however, have bigger bodies and weigh more than than the Essence). I've recently seen Distillates going for anywhere from $1,600 (looked like a beater) to $3,600 (has been up for a very long time so I think we can assume it's overpriced for the current market). Over the years, I've seen nice looking Disillates that appear to have been well cared for going for anywhere from $1,800-$2,600 depending on the wood recipe, whether it's a model with a longer horn, has had LEDs installed, etc.). It's a bit more expensive investment to purchase an Distillate, but I think it's worth it. The good thing you have going for you is that by looking at previously loved Alembics you won't experience the price drops that those of us who purchased new inevitably experienced.