I only went with the Cosecant after owning the Brick, and I didn't do it for sonic reasons, because the Brick sounds great. I did it for systems matching, and quite honestly at this point I should probably consider the Crimson myself since I am investing considerably, and upgrading my system with a Class A Krell amplifier.
Do what makes you happy, but I would suggest working in logical steps and starting with the Brick and then go from there...Mine will be up for sale soon with a dealer and it is perfect, and low hours.
