Cisco, router, 7513, 7507 which would be better?

CISCO router:
The CISCO 7513 router is equipped with a chassis, dual power supply, RSP8 engine or RSP4 engine (note: the chassis power supply and engine quality are very new). The other modules are as follows:
VIP4-80 module, color at least 8-9 into new.
VIP2-50 module. 8-9 new.
VIP2-40 module.
PA-8T module.
The CISCO 7507 router is equipped with a chassis, dual power supply, RSP8 engine, or RSP4 engine. The module paths available for the machine are the same as those for module paths 7513, and many PA modules can be equipped with VIP boards.

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