Recommended Lab equipment for Cisco CCNA

Hi rene,
I am preparing for my ccna and I have passed mt icnd1.

So far I have been using packet tracer but I think its time for me to use real equipment.

At the same time, I wanted to get equipements that will be valid for usage in both ccna and ccnp.

Should I still get 2950 and 3550 ? I am not sure if they support ios15.
Also, as I am getting reburbish unit from knowledgecomputer (local company) instead of from ebay due to electronic taxes and power concerns, the price are slightly more steep.

How many of the switches should I get ? 3 x l2 and 1xl3 ?
Also, for the router and firewall what should I get that will be relevant to the ccna and ccnp exam ?