Your jobs to this point have been limited by your equipment. You will find the same limitations when you go to a TM, but depending on which TM you get, there may be fewer limits. You can go after larger jobs than you had before and do them very efficiently.
If you are that established after 3yrs, you've already outgrown the entry level TM's such as the Rage or the 360.
You won't go wrong with a Judson, they are SO simple to work on, SO simple to work with, very consistent and controllable heat and reliable.
The only thing I don't like about
TCS is the kero burner. Its not very consistent with its heat, esp when cleaning furniture. It has great vacuum but the heat source just needs to be tweaked.