If you got offered a tunable Overton F or a Overton tunable Low D which one would you choose and tell me how they play. Thankss!! 
I’ve never been so fortunate, but just talking about the pitches: if you want to play Irish music (with other people) you need the D. If you’re just playing by yourself, or playing jazz or other styles, the low F is a good choice (good compromise of sound and size).