Yep. I'm one of those "people". Last item to complete my CAAD9 was a wheelset.
I came damn close to "settling" for a set of wheels that met my weight requirements,
but didn't pack the visual punch that I've trying to incorporate into my build.
I figured if I went pretty much all the way on everything else,
why "settle" one one of the most noticeable parts: The Wheelset.
She'll be done tomorrow. The wheelset is on order.
Here is what she'll have on her up until now:

Upgrades so far...
-Ultegra SL Double Crank w/
-Dura Ace 7800 Chainrings
-Dura Ace 7800 Bottom Bracket
-Dura Ace 7800 Shifters
-Dura Ace 7800 Front Derailleur
-Dura Ace 7800 Rear Derailleur
-Dura Ace 7801 Chain
-Ultegra 6600 Cassette
-Dura Ace 7900 Pedals
-Ultralight CNC Brakes
-SwissStop GHP2 (Green) Brake Pads

Cockpit:
-Bontrager XXX Race Lite OS Stem
-FSA K-Wing Compact 44cm
-Fizik MicroTex Tape & Gel
-Fizik Aliante w/Carbon Rails
-Fizik Cyrano Seatpost (Carbon)

Wheels:
-Continental Grand Prix 4000S Tires
-Continental Race Lite Tubes

Incoming...
-Wheelset Soul S2.0

OEM Parts left on bike...
-CXP22/C3 Hub Wheelset

Accessories:
-Radbot 1000 Tail Light
-ViewPoint Flare 5 Headlight
-Camelbak Podium Ice Bottles
-Arundel Mandible Bottle Cages

Once the wheelset is on, I'm looking at her being in the 15.65lb range.
For the money I put into her, that might not be light enough for some folks,
but I built her to be a high speed cruiser with the stiffness to get-up-and-go when called upon.
I think the new wheelset will definitely tie everything together and
allow me to get the most out of all the other upgrades I have into it.