When embarking on the journey to select the ideal size of climbing shoe, what crucial considerations should one keep in mind? Is it solely about the numerical size, or do factors such as the shoe’s fit, type, and intended climbing style play a pivotal role in this decision-making process? How should one balance comfort with performance, especially given the nuances in the fit that different brands present? Additionally, have you contemplated the significance of trying on several pairs to assess not just the length but also the width and the volume of your foot? What about the potential for the shoe to stretch over time? Should you opt for a tighter fit for enhanced performance, or is a more relaxed fit preferable for prolonged wear? How do seasoned climbers determine their optimal size, and what strategies do they employ to ensure they make an informed choice that aligns with their climbing aspirations?