Use 1280x1024 wide, and then choose stretch on your monitor imo. That's what I use, for me it's the best ;o

Well, 12x10 is 25% more pixels than 13x7, so technically you get a sharper image. Doesn't really make that much diff anyway

That's why you stretch it ... it's 5:4 but designed for a widescreen resolution so if you stretch to fit the entire screen the ratio comes out correct.

It does.

When you choose a 5:4 pixel resolution, you can also choose a "standard" ratio or a "widescreen" ratio. Example, first screen is 13x7 stretched:



Next, this is 12x10 which is a 5:4, but in a widescreen ratio, shown at aspect, note that the pixel ratio is proper 5:4 but then it's "squashed":



Finally you see 12x10 widescreen stretch:



Comparing 1st & 3rd images, the ratio / picture is practically the same. Of course, even though the 3rd image technically has 25% more pixels, in practice it's honestly not noticeable at all.

(forgive the noise and weird angle, I'm using camera phone not digicam)

Hard to tell without giving a comparison screenshot, but you gotta make sure you set it to widescreen

i.e. there's

1280x1024
Standard

1280x1024
Widescreen

2nd one is the one you need for widescreen monitor

Anyway not like it matters, lol ... we all choose what res we find most comfortable, good enough right?