There is another option if you're open to it - <a href="http://www.wolfems.com/Products/EMS/Wolf_3D/wolf_3d.html" target="_blank">Wold 3D EMS</a> from <a href="http://www.b-specusa.com/" target="_blank">B-Spec</a>. I think it's about $1500 for the unit, turbo timer module, and a boost control module. Plus it has a hand-held programmer (how do you get easier then that to program?). Not sure if it can be a stand-alone unit, but supposedly Byron is running it on his 400+hp Impreza.
The biggest problem I have with the TEC-II or the Wolf 3D is that you have to install them yourselves. I think I got a quote from Trey for a Haltech setup installed ant tuned with a boost controller module for $1800. This will most likely be my route by the end of summer... if I can find a laptop.