MIT & Spectral -- but Which MIT?

I know that Spectral recommends using MIT wires with their amplifiers; 'quality' of the various lines of MIT cables aside, though, does it matter which MIT cable is used to maintain amplifier stability? MIT cables range from (almost) reasonable to hideously expensive; rather than use my current Alpha-Core M2s, I'll pick up some MIT wire to protect my newly-acquired DMA-50, and would like to keep that cost as low as possible. Are the lower-cost MIT Terminator lines adequate to the task, or should MH-750 be considered the minimum acceptable? If they should be 750s or higher, which model and/or impedence -- low, medium, high -- would be best (speakers are ProAc 2s)? Shotgunned, or not? Has anyone successfully used Alpha-Cores with Spectral amps? Any help is vastly appreciated. Thanks in advance, Mark