My next purchase will be a electronic boost controller and was wondering everyone's experiences with the below units:

1. HKS EVC
2. Greddy Profec B
3. Apex AVC-R
4. Greddy e-01

I like the Profec B but if I am going to spend that kind of money, I want it to have a few features that I can use - It just seems too simple.... I really like the HKS EVC.

Thanks for your comments.