Which watermark to use??

[rmetal]

I'm having some issues with making a decent watermark for my images. So far I have two right now, not sure which to use..heres a sample image for each.

[pmota01]

I like the first one.

[artandrevolution]

i dont like the font on the 1st one. (or 2nd one actually), but the only issue i found with the first one is that i couldnt tell that was an X until i saw the 2nd one in a different font. Im assuming one wants the watermark to be readable.

[bugaga]

I like the second one...