Coulter counter - (Aug/07/2007 )

Can anyone tell me which brand of coulter counter (to count tumor cell line numner) is easy to use and the price is reasonable.
Many thanks

We use a Sysmex CDA-500 particle analyser for counting cells. Its really easy to use but I have no idea how much they cost. We got rid of our old coulter counter because it was just too difficult to use and too old!