IBM Models system

[tottiwagner]

Hi everyone,

could someone please explain me the IBM model system.
I just want to buy a new IBM Thinkpad. However, I am totally confused by all these different modells.

I found the 1830-BRG
and the 1829-9MG

there are nearly identical but there are even more similar models. Is there a system which could help me to identify the notebooks easily? Very often resellers even use the IBM stock numbers which makes it even more complicate.

Thanks for help and advice

Totti