I've got an AVCR but as an electronic boost controller it still spikes every now and then, but not as bad as a gated one (ie, turbosmart).
My boost is set on 1bar (14.7psi). I run this all day everyday and it's been like that for about 6 months now. Normally the "safe" level on a standard series 1 turbo is 12 max of 14psi.
Depends on what your game enough to run.