Interjak 200 [eth+] versus LinkSys Etherfast

Hello group.

I need advice.

I have this InterJak 200 router, and I have this Linksys Etherfast (supplied
with my ADSL-subscription), what to choose...

The InterJak 200 is propably older than the LinkSys, but I like it. I like
the hardware and the interface, allthough the firmware is outdated.

I am not a hardware/router expert, thats why I am askin..

Is it stupid to reconfigure my home network to evolve around this InterJak
or should I continue use the LinkSys (which seems to be working fine). And
what about security and speed?

/Kenneth S