Chris, now that you have taken the plunge, the Domino is a must as it is so fast compared to cutting M&T joints. It is also very strong as compared to a biscuit. I actually sold my biscuit jointer aster purchasing the domino.
The track saw is awesome as you can cut a 8' board straight and clean enough for a flue line with no need to try to joint a long piece. I have had difficulties in this task with my Jointer and table saw.
In addition it is a small investment but their drill is awesome. It is much smaller than all of the others with comparable power.
BTW, it is fun spending your money!