People can be proud of either of those accomplishments as well.
Honestly, I doubt "most proud" versus "best" makes a difference at all. Candidates generally explain their answers to these open ended questions. If they (for some reason) don't recognize the implicit, "And why?" part of the question, you just follow up with it.
The conversation will never be just, "Foobaz, next question." One way or the other, it will be, "Foobaz because..." It saved the company $2M/year. Or users really loved it. Or it improved the engineering process and made releases faster and lower risk. Or it was a really tough problem that required a lot of creative thinking. Or it taught me a lot about 3D game programming.
Honestly, I doubt "most proud" versus "best" makes a difference at all. Candidates generally explain their answers to these open ended questions. If they (for some reason) don't recognize the implicit, "And why?" part of the question, you just follow up with it.
The conversation will never be just, "Foobaz, next question." One way or the other, it will be, "Foobaz because..." It saved the company $2M/year. Or users really loved it. Or it improved the engineering process and made releases faster and lower risk. Or it was a really tough problem that required a lot of creative thinking. Or it taught me a lot about 3D game programming.