I´ve (sadly) abandoned my old creamware cards a long time ago, (still located in an old pc collecting dust).... I hoped the SC would release OSX drivers/software, but realize this will not happen

My current setup is MacPro (OSX) and Avid Mbox3 Pro + Eleven Rack (linked with spdif) and Protools 10 as my main DAW
I am VERY happy with my setup! However.... I can´t stop thinking of my "old" creamware cards and the lost potential with 9 DSP´s in my setup... (I also have A16Ultra for outboards)
What I thought could be done is to install Windows 7 or 8, upgrade to Scope5.1 and run windows version of Protools.
Have anyone tested PCI cards with ASIO under Protools? Is it Stable? Any digital "glitches/jitter" when running through ADAT@48kHz ?
I hate to pay out 239EUR and end up with a unstable lowend audio system..... ( I would LOVE if the Creamware hardware if sonically superior to Mbox 3 Pro ....and stable.....)