hi all, are the canon xl1/xl1s cameras still a viable secondhand purchase, the xl1 had 300k pixels & the xl1s has 270k although i'm told they were bigger pixels wont this reduce the sharpness of the picture. given that the xl2 has 800k pixels are the xl1/xl1s cameras too far out of date to consider buying secondhand & would i be better off waiting till i can afford an xl2?