I thought I'd just add a few points that seem to have been missed so far:
-The T16000m allows the use of the TARGET software. This is potentially a big thing as is allows, I believe, axis swapping, button remapping, and setting up of virtual devices. For those who play a lot of old games, this could be a big bonus, as any game that does not allow specific axis re-assignment will force you to use whatever layout by default with the Tflight. That might mean roll when you want to yaw etcetc.
-Tflight does allow buttons to be swapped on the fly, hardware side, however. So if the button arrangement is fixed, you can swap the assignments around, provided those functions were bound to buttons in the first place.
-TARGET also allows sensitivity adjustment; Tflight does not have this ability unless the game itself does. This is particularly important given the next point.
-I would also personally suggest that the sensitivity of the Tflight around the deadzone makes fine control very difficult in all three axes. The T16000m by all accounts is much more accurate in this respect.
-One thing that Tflight really does have going for it, and a can't say enough good things about, is the rocker axis on the throttle, which can be tied or untied to the twist axis with a button push. The yaw precision using the rocker is still difficult, however.
-The Tflight also has a 50% detent on the throttle which is absolutely perfect for elite, particularly if you use FAoff mode a lot.
Depending upon your usage, the software side of things (often overlooked) might make a huge difference one way or the other.
Overall, I'd tend to recommend the T16000m (although I only have the Tflight myself); but both are good options depending upon specific taste and requirements.