the technomate would have the crisper picture but the support would not be great
I would go for the Vu+
I have had the tm7100 (same as 7102)wich worked fine for many years still have the tm6902.
but the Vu+ would be better supported with lots of images team
to choose from .
The TM twin i can't say much about ,fairly new could be good but only time will tell