I agree about speed it is also EOL . I personally would buy 2600 series router for a Cisco lab they have more ports to fit various WIC cards in.
In my lab I have three 2600 series routers each has 2 FastEthernets and at least one wic-1t (X21) the middle router has 2.
I also have 2 2950 switches , an one more as the management lan switch. Each device has a 192.168.1.0/24 address for remote management. That way I don?t need to go out to my garage when I mess up, as it is cold in there in the winter.
My advice would be go to fleabay and get the person selling the router to configure bgp ospf eigrp and rip ,and also create a sub interface on one of the 2 fastethernet ports, then send you the resulting config and the output of a sh ver command.
Any router that cant manage to do this is a a waste of money even if it may get you through your ccna you will need to buy again for CC.X.P exams