Hi,
Both Nokia N97 and Samsung B7610 Omnia are worth of using.
Samsung B7610 is having Windows OS while Nokia N97 is having Symbian OS.
Samsung B7610 is having 135 MB RAM while Nokia N97 is having 128 Mb RAM.
Memory for both is same, i.e, 32GB
Samsung B7610 is having 5 MP camera while Nokia N97...