Particle Transport Simulation: ANSYS-CFX vs. COMSOL, which one is better?
 

I am trying to simulate particle transport in microchannels. I have the option of buying either CFX or COMSOL. I dont know which one to prefer? I know in COMSOL you have to count every single particle after it is captured unlike CFX which outputs a direct count. Other than that, what factors do I need to take into consideration?