For 1 and 2, I would say it totally boils down to personal preference an distance/size ratio. For 3, again, distance to the screen matters a lot. The 4th one I

For 1 and 2, I would say it totally boils down to personal preference an distance/size ratio. For 3, again, distance to the screen matters a lot. The 4th one I've seen the most heated discussions about. In my opinion, highest you can afford (both money-wise and computational power-wise) is the most useful resolution. Even if you can't distinguish the individual pixels (aka screen door effect) aliasing is still an issue.