In reply to climb the peak:
> I'm looking at getting the La Sportiva TC Pro but think I could only justify the price tag if they were to last a very long time. I was thinking perhaps it would be better to just get a comfy cheap shoe instead.
Going to Yosemite is expensive and not something you'll do that often in your life (probably). So why stint on shoes which will make the climbing more comfortable and enjoyable? You might save £50 but at what cost?