DS-TCG406-E vs iDS-2CD7A26G0

Testing123TT

Young grasshopper
Jun 29, 2019
49
8
London
Hey guys,

I've got 2x DS-2CD7A26G0 (the older version), one of which is failing and has to be replaced.
What do you guys think - should I go with iDS-2CD7A26G0 (the newer version), or maybe DS-TCG406-E ?

I don't see any major differences between these, however, my distributor has priced the DS-TCG406-E 500 Eur less than the iDS-2CD7A26G0 (even though the TCG is 4Mpix) and I'm wondering... why?

Regards,
TT