What looks best for IL2 (& therefore SoW) - 3 22" screens, or 1 27"?

[Triggaaar]

I'm planning my PC acquisitions, and my main dilema is guessing what would be best for SoW, Eyefinity with 3 22" screens, or 1 27" screen. I already have 1 22" screen (which I need to keep), so if I'm going for 3 screens, they can't be 24" or 27". But I could move my 22" display to the side (for when I'm not flying) and get something like a 27" monitor for SoW.

Can anyone with some experience of either set-up give advice?

Thanks