I've been recommended to open a new thread in here so here it is:

Hello there people,

I'm planning to buy a cheap reference monitor to use with Guitar Rig and GTR3. I don't do recordings, I'll directly play through them.

My budget is 150 - 200$ and the models I could find in my local store are these:

They both sound good to my ears but I'm no pro. The problem is Yamaha's price is for each monitor. Meaning: I can get only one.
I was wondering should I go with stereo cheaper M-Audio or Yamaha? What do you think? Will the speaker surface area affect the sound I get, like in guitar amps (think the difference between a 10'' and 12'' cabinet)?

Thanks very much