I have owned all three. A big determining factor on how these pickups will sound is the preamp. The newer Euro LX's come with the trimpot-equipped TonePump. The trimpot is important as the preamp is VERY hot out of the box. Most guys dial it down to between 30-50%. This preamp is designed to emulate the "classic" Spector sound.
Paired with the P/J's, you can get a very bright aggressive tone. Paired the TW's, in dual mode it will be beefier but not as much brightness in my opinion unless you crank the treble. Single coil mode has a noticeable drop in level in comparison to dual. I've seen several players use single coil then crank the bass and treble all the way. This actually sounds better than you'd expect. I think there are a lot of usable tones from the TonePump in dual mode; I typically had my treble up most of the way and the bass bumped a little.
My only experience with the DC's on a Euro is in the Webster bass which pairs them with an 18v EMG BQC preamp. I've been using this bass for a year and a half, and I would not characterize it as wild myself. The EMG preamps are known to be pretty clean sounding. It has a lot of clarity and is very good with the low B. The BQC also adds a mid-sweep control so you can really dial in the EQ. I also don't find the output any hotter than my TonePumps were. Again this is just my personal experience using GK amps and various preamps at home (RBI, REDDI, U5). I would imagine the DC's with a TonePump could be a very aggressive sound.
I also use the DC's in several of my US Spectors, and paired with the Spector 18v preamp, they are my favorite. Just enough aggressive to get you in the same ballpark as the classic US 9v Spector preamp with P/J's, but it gives you a thicker bottom as well. Some guys (myself included) have experimented with mixing the DC with a soapbar P. I do this on my NS-5XL with the US 18v preamp and it is a very good balance between the aggressive sound of an NS-2 and the full sound of a XL bass.