Tampa G35 Sedan 6MT:
Concur with waiting for the next version of the sedan. Although the loaded 2007 car is better than what you have now, it isn't that much better, especially if you don't like the 5-speed automatic. The next generation sedan with a better transmission and, maybe, direction injection would be a big step up.
As far as affording it is concerned, there is a balance between being a prodigal and living poorly in order to save for a future that never arrives. It sounds like you have your financial affairs in better shape than many people decades older than you.
