My other car is a MINI!!!!
What ever you get Stacey, make sure it's got an open look control option so it can vary the duty cycle.
Some cheap ones run on a fixed duty cycle, and don't adjust the duty to account for minor changes or boost dropping off at the top end.
Most good ones should have an option to run a target boost, whereby the map sensor in the ebc monitors boost, and if it's dropping off at the top end it'll make minor DC adjustments to sustain your requested level.
My gizzmo has this, and I believe the turbo-smart Bill has does something similar.
personally, I think the greddy one looks dated somehow. The turbosmart one looks good, but it was the 6 settings of the gizzmo, and the price of just £200 that sold it for me.
You can run just 10% DC with very low gain, or just switch it off and it'll be actuator pressure only, which is what I'll be using in the wet, then a single press of a button scrolls through the 6 presets.
I plumbed mine in in parallel to the N75 so like you say, the N75 will control part throttle and the ebc will cap the peak