Hello all,I am using a Canon 400D,and find I am regularly having to bump up the iso to achieve blur free images.I am not actually unhappy with the results my 400D produces,but I do wonder which body would I upgrade too for under a £1000 to improve image quality at high iso settings ? The 50D and 500D from what I have read,are not exactly a leap forward regarding better quality at high iso,I don`t see that the 40D will do much better than my 400D,so sticking with canon what do you suggest ? I don`t really want second hand,and I have my 400mm prime which I adore,so swapping systems is not really an option

Any suggestions,is a new SLR from Canon due ?