I am going to pick one up soon as I get some money. I can buy the 300 non IS right now but the ability of not being able to take it into canon scares me so I have some questions.
Start off I will be using this lens for indoor sports and Surf photography with a 1.4 or 2X TC. Always be on a tripod or monopod.
1) what are the odds of a lens failur
2) is the IS a $1600 upgrade worth it
3)what places could service the 300 non is?

