I was looking at their site some more and they have another kit, listed as "Premium", but it looks exactly the same as the one above, only you have to upgrade the regulator and the price comes out more: Strange!
http://stores.kegconnection.com/Detail.bok?no=22
$238.95 Dual Body Regulator Upgrade-two bodies-2 pressures
The Premium kit has the Taprite regulator, whereas the "basic" kit has a more "Basic" regulator. Both regs are dual body, both regs allow carbing of two different kegs at two different pressures.
AFIAK, the Taprite is different in two ways:
1) you can turn the pressure adjustment by hand....on the cheapo one you need to use a flat blade screwdriver, (it's a big bolt, and I often just turn it by hand too, but screwdriver is needed sometimes).
2) on the cheapo reg, when you turn DOWN the pressure, it doesn't automatically vent. So, if you turn it up to 30 PSI, then back off on the reg, the system will stay at 30 PSI until you tap the relief valve on the reg or draw a bunch of pints. For me, my method to turn down pressure is: Back off on reg screw a bunch, tap the relief valve, (it will burp CO2 and the pressure will drop a bunch, usually far LOWER than what I want), screw the reg screw back in slowly until I hit the pressure I want.
On the Taprite reg, when you back off on the reg, it automatically vents extra pressure.
Honestly, the Taprite reg isn't worth it to me, but it might be to you.