Cool, I see you are an Anastasio fan. But according to his Tech and this page http://www.redmedia.com/chords/tabs/gearhead/treys_overall_setup.htm Anastasio uses two Ibanez Tubescreamers not two Maxon's unless he has changed recently. Has He?
But all that is relavent since the Maxon is said to be an almost copy of the original Ibanez. As you have mentioned it carries that beloved JC chip, as does the Sparkle Drive and the Route 66, that is why they all sound pretty close except for the latter having their distinguishing features.
The Sparkle Drive has a clean blend knob that lets you blend in as much of the original clean signal with the OD circuit, and the Route has a completly seperate(footswitchable) and good sounding compressor.

Zvex pedals are amazing, god choices, I've thought about getting a Super Hard On.
Have you considered getting a compressor? I know that Trey's Ross compressor is a very important part of his sound. It is also good to point out that he places it after the ODs. You might want to ck out http://www.analogmike.com since you are a Booteek fan.