In the rapidly expanding field of machine learning, comparing models and algorithms is crucial for improving performance, ensuring longevity, and facilitating easier retraining of models. This complex process involves not only evaluating different algorithms and their parameters but also understanding the nuances of statistical tests, loss functions, and learning curves. Key challenges include determining the significance of metric scores and ensuring models generalize well to unseen data. Experiment tracking tools like Neptune play a vital role in managing the overwhelming data from parallel experiments, offering insights into model features, objectives, and resource usage to aid in optimal model selection. This process is further enhanced by considering both development-based parameters, such as bias-variance tradeoff and statistical significance, and production-based parameters like time and space complexity, to align with business requirements and resource availability.