Reading the Anandtech article and owning a P180B:
The special edition of the P182 (the P182SE) has a small flexible interior spotlight (which only works when the computer is on which is not when you would want it to be on), and has a mirror finish (which is apparently quite amusing to take pictures of). Other than that, the regular P182 is the same. I'm underwhelmed. The P182SE costs $60 more than the P182, and the P182 is going for about $40 more than the P180B.
Differences between the P180B and the P182:
1. External switches for the two top fans.
2. The entire interior is painted black.
Far as I can tell, that's it. Doesn't seem worth the $40 to me.
That being said, I love my P180B and I think anyone getting one of these (P180 or P182) would be very happy. These cases are quiet. VERY quiet. I've got an E6600 overclocked to 3.0Ghz, an 8800GTX, an Intel BadAxe 2 and a Corsair 520W PSU in my P180B, and my wife, who has very sensitive hearing, can't tell if the computer is on while she's in the same room.
If you get the right kind of 3rd party cooler, you can have the heat from the CPU blowing directly out of the top of the case. The PSU and hard drives are at the bottom of the case, and are separated from the rest of the case, so they are both cooled by a fan that's down there and don't add their heat to the rest of the case. This is how cases should have been designed in the first place - it's clearly a better layout than the norm.
The one possible problem with the case is that certain PSUs won't have enough cord length to reach certain motherboards due to the nontraditional layout. This is, I think, more of a problem with poor quality PSUs that don't give you enough cord length than a problem with the case.
These cases can take a very long video card if you take out the middle hard drive rack (which you would only really need if you have more than, oh, about 6 or 7 hard drives). The 10.5" long 8800GTX is no problem in this configuration, and there's many inches left so it could easily take the ATI R600 even if it's the rumored 12 or 13 inches long. Doing the 8800GTX or R600 in SLI may be a problem, depending on the layout of the motherboard.