Yeah..i know from personal experience my SD400 Canon LCD scratches very easily.....It is a good camera though....it is very fast...turns on very fast and focuses very fast.....The SD500 adds a couple of other picture 'modes' (ex. fireworks, snow- I think)...but I would go with the SD400. The only bad thing is that in low light situations (ex. U2 concerts), it blurs really easily, but that is the same with most non-SLR digital cameras)