I don't know which is the right market, but I have a suggestion on approach: Choose an application/market that you, as founders, personally find appealing. E.g., if you're not designers, don't do an asset manager for designers. It will be way harder to get it right, because you have to make product decisions based on guesses and feedback, rather than intuition. It will also be less fun.

good point. Thanks Evan!

I know it was a joke (I think?), but for clarification, I was trying to distinguish unnecessary time sinks, whereas IE is annoying, but necessary.

But if anyone has any other suggestions for big ones, please comment.