Hi, 'Ho. (I simply couldn't resist!)
First, I'm ignorant of how to do links... but, if you haven't done/discovered this... (1) go to the main page, then (2) click the products, then (3) click basses, then (4) click wood samples, then scroll down a little and click body woods.
Then you'll find info on the various body wood options -as well as info on their effect on a basses sound. Just in case you don't know, they offer maple and mahagoney as body woods (the main two, I think), but also vermillion, purpleheart, walnut, myrtle, and ash. (Some of these cost extra).
The point is, in shaping your sound, you have several variables/choices. Alembic sez the neck laminates are the biggest influence on the sound... then the body, then the top (and/or back, if applicable).
Mica has told me that purpleheart is stiffer as a neck laminate than walnut. I get the impression it's a lot stiffer...? (Ask around to clarify). My understanding is that a purpleheart fortified neck would tend to be much more stable. Depending on where you live/play, and intend to live/play, this could be a big factor.
They say that both as a body wood, and as a top or back laminate, walnut seems to somehow really capture and convey the subtlest nuances and detail of technique/playing... they call it a fast attack... I would assume that having it in the neck (as a laminate, not a thin veneer) would have the same effect?
Anyway, you should check this out if you haven't already.
I must totally agree that adding ebony in the neck is essential; and Alembic confirmed, prior to my ordering my second custom on December first (a Coco Bolo Mark King Deluxe) that adding a single ebony laminate is the single biggest thing you can do to influence (and upgrade) your sound.
Since I ordered what to my knowledge was the first Alembic with a combination of maple, purpleheart, and ebony, the combination has become both proven, and popular. As another member suggested, if you were to get the 7 piece alternating maple/purpleheart neck, and then swap/upgrade the center purpleheart lam to ebony, it would kick some serious butt. The effect of ebony as a neck laminate can not be underestimated. It's mind-blowing. They tell me it's even more significant than Coco Bolo, although as I understand it, this is the next recommendation on the list.
There's a picture of a really cool little custom Essense in the Showcase, either in Essense or Custom basses. I think it's Stoney's Custom Essense. It has a gorgeous dark Walnut BODY, with Tulipwood as a topwood (and it's one of the Coco Bolo family woods, with the same sound).
I've heard people rave about the Coco Bolo sound for years... but since I've never played one plugged in, I really can't say anything first-hand. But it is their house recipe; that, and the fact that Alembic sez it'll produce a very different sound from my Maple/Ebony-dominated 8-String custom Europa -sold me on the combo -although I've upgraded to an extra-cool custom neck that also includes Mahogany and Vermillion too!
Good luck, and I look forward to seeing what you decide. I think bassjigga/Dave has or is placing his order before the increase too, so we'll probably become bass brothers, watching our instruments in the FTC threads together.
P.S. IMO, it's worth it to upgrade to 3-position Qs. I think it's $125 or $150 retail (per switch)... confirm.