What is the best systray module in anyones opinion?

Also, is there one that supports transparent png's and a selective area to tile.. say, you have an image and want to tile the center part of it, but do not want to tile a border that resides on the left and right ends?

grdTray is the only systray I know of that does transparent icons. as for the transparent borders you can either use grdTray or use a Transparency module on a shortcut.