Moved: This is a technical question and the thread is more suitable in Linux-Newbie. It has been moved accordingly to help your thread/question get the exposure it deserves.
The difference between Mandrake and SuSE is mostly in configuration tools. Hardware support is mostly the same, application version also the same etc. So, if you can download both Live versions before you decide, do it and try them both. When there's problem with hardware support, it's with WiFi cards. So, I don't know which one you have, but there might be support for it in one and no support (or harder to configure) in the second one. When you try them, you will know.
(Well, you can also search the HCL:http://www.linuxquestions.org/hcl/index.php