Read about Kurt Cagle's abysmal experience with IE7. I didn't suffer such a horrific experience because I manually installed IE7 prior to the automated roll-out on one machine and my other Windows boxes are not using XP SP2.

However, I did enjoy Kurt's very apt description of Opera 9:

I like Opera 9, which to me is a fine-jeweled watch that’s a wonder to work with.

I concur whole-heartedly! It's a shame that Opera doesn't have more market share.