OS X seemed to work well enough for standard use, but I had previously gotten used to Linux as my primary desktop and was beginning to miss it. I loved the footprint and the flexibility. With the updates included within the Ubuntu 14.04, enough pieces of the puzzle had been worked out. This post contains some notes on the build and links to help others.
I have the CP-US-03 by CP Tech USB to Serial adaptor and have used that I have used for years. The manufactures driver always worked will for Windows and with kernels 2.6.11 and later, it is plug and play in Linux. With the new MacBook Pro, the provided CP Tech drivers did not work.
SecureCRT is new to me since my move to a new Macbook Pro. One of the things I noticed is that out of the box, all the various colors that I had in Putty from my Ubuntu system were missing.