In order to answer this question I would need additional information. They both have and advantage and disadvantage, you would have to pick which one has less risk for you. I think to answer I would need to know more background information such as the atmosphere of the company and of the project. If I know that there could be similar products being developed by other companies than it might be better to be ahead of schedule and a little over budget. If the people I report to for my project are more focused on saving money than I would rater my CV be positive and my SV be negative. Depending on what is more important for the project would dictate which I try to make negative or positive if I can’t have them both be positive. I don’t think that either of those situations are better than the other if I was ignoring all other factors and deadlines.