Macro Shot - Tips

[bee]

Im just wondering how do people take their macro shots (ie: format) ?
Do you take RAW only ? RAW + JPEG ? Or JPEG only ?
I know that RAW format is more flexible as you can do more editing on the computer.
Also, if I take RAW + JPEG, will the quality of the JPEG will decrease compare to JPEG only ?

Thanks in advance.

Edit: Mods, I think I should have posted in the "General Help" section, please move it if needed. Sorry.