right now I have a 30D with a 50/1.4 which is ballerific and a tamron 28-75/2.8 which has been awesome.. but compared to the sharpness of the 50 is shit. I'm thinkin about either a 200/2.8L or a 70-200/4L 200 http://www.fredmiranda.com/reviews/showproduct.php?product=37&sort=4&cat=2&page=1 70-200 http://www.fredmiranda.com/reviews/showproduct.php?product=14&sort=4&cat=27&page=1 my brother has an 18-55 that I could use if I need the width, so if I got the 70-200 I'd be tempted to sell the tamron and only keep one zoom. ideally, either would only be a stopover lens until I can get a 70-200/2.8L IS, but at $500-600 that's not a bad deal. so you guys have any experience with either? both?