Best PreAmp match for a MC-7270?

Hello Audiophilers, like many, after hearing McIntosh products, I fell in love. So here I am now with a MC-7270; I'm hesitating on my PreAmp... C34/C31V/C41/C42 or C40. (Mostly I use CD player and phono and a tuner. Dont't watch TV very much). For the time being Bose 901VI would be hooked-up to the system, but maybe planning on something else later on.. Did some other reading on PRE/pwrAmp matching, some guys came up with a 10:1 or even a 100:1 ration between output/input impedance, is this only applicable to tubes or SS as well.. Looking at something bellow or around 2000usd.

cheers,

Steph