I organized a group buy for the GI Pro with ATRE last year.
The DS model works with 2004-2010 Rockets according to the mfr., Healtech's, site.
However, aside from the small price difference between it and the ATRE model, why would you opt for the lesser of the two models.
The
Advanced
Timing
Retardation
Eliminator unit will, as an option, defeat the timing retardation build in at the factory for gears 1, 1&2,or 1-3, providing the same effect as you would get by removing the throttle body secondaries, i.e., a whole lot more giddyup in gears 1-3. If you are planning to do other mods like pulling out the secondaries triple K&Ns, TuneBoy or other computer, cat delete, etc., then that work would render the ATRE feature moot and the DS modle would be the one for you.
You can reference this site to get the other info you need or want:
Cal-Sportbike Distribution ::: GIPro w/ATRE by HealTech Electronics
It also has a link to Healtech's site which has dealer info on it.