I've been using Trebuchet MS for coding, and it does a good job on this: all the confusing pairs are easily distinguished. For example, the lowercase "l" has a little rounded hook at the bottom to it doesn't look like a capital "I". It's not perfect, but I've been enjoying using it.
Before that I used Georgia, which is also fairly good in this area. I stopped using Georgia because it rendered poorly with too-thin stems in Windows 8.1 on a MacBook Pro Retina. Looked fine in OSX and on my ThinkPad's 145 DPI display.
Before that I used Georgia, which is also fairly good in this area. I stopped using Georgia because it rendered poorly with too-thin stems in Windows 8.1 on a MacBook Pro Retina. Looked fine in OSX and on my ThinkPad's 145 DPI display.