Like other guys here, I've done the multiple cartridge route and bought a burner, which now sits idle. I now have cartridges I have no use for taking up valuable space. Waiting would have served me to a point, but I would have missed all the fun along the way.
I was kicking myself for passing up a DDCC-1 a couple of years ago thinking that a newer cheaper version would soon be available, but I was wrong. In retrospect that turned out to be good too, because since the FG99 came out, I find the 80 track modification to my TI controler is 'more than enough'.
At this juncture, I think I'm done expanding my P-Box, as I'm approaching a point in my life where I am going to have to start 'downsizing' anyway. Now I'm placing my hopes on the more compact TIPI which I believe will give me the ability to do anything that my P-Box can do. So in this case, I'm going to call it 'patiently waiting for something better' instead of procrastinating.
Now I'm wondering... will the Rpi portion of the TIPI WITHOUT A FAN making noise still give me the same experience? Maybe I'll add a fan just for the nostalgia.