Seriously, though- the difference between a Persuader or Spoiler and a Series bass is like the difference between a late model Ford F150, and a brand new Ford Mustang (just using Ford as an example, not because I prefer them- for some strange reason, I find the vehicle I drive around in is off less importance than the instrument I play... maybe I'm more than slightly mental, eh, guys?)
The Persuader (and I believe Spoiler) is mostly maple (from what I know of them), while a Series I has a 5 piece neck (maple & Purpleheart), and usually (sometimes there are more laminates, depending on what a person has ordered) a 3 piece body with a mahogany core and an exotic top and back with a hollow well.
A Series II wood-wise has at least a 5 piece body, and a 7 piece neck with the hollow well. This all makes a huge difference in tone- I've owned Europas, Epics, a Series I, a couple of Customs, and finally, the gem of all gems, a Series II (6 String).
As to electronics, forget about it- the Series instruments are the top 2 models Alembic makes, and as such, they have the best of everything. The tonal possibilities are quite literally endless.
Some people will say that the woods and or construction doesn't make that much of a difference, but like I said, I've had quite a few, and the difference may be subtle to some, and quite astounding to others (I guess I fall in that 2nd group).
What I find so great about my S2 is the purity of tone. The tone is so clear and clean that it's like going from speaking with a normal voice to speaking with the voice of God.
Do yourself a favor and get either a Series I or II, but if I were you, I'd hold out for a S2- I've seen more than a few 4 strings for nearly the same price that you'd pay for a SI. Heck, I've seen Signatures and Brown Basses for around the same price, or more, depending on if they're Standards or Deluxes.
Good luck in your search and enjoy that Persuader- it's a keeper!
Peace;)
Frank