Anyone use a hidden / windshield antenna?

So I was thinking today about what to do about my semi-working stock antenna and got to thinking I would really like to have a hidden or windshield antenna added to my Z.

I have a rust problem from the old one leakin and would like to keep the lines on my Z clean by eleminating the antenna all together.

There doesn't seem to be a lot of antennas out there, but one I did find was this one on Ebay.

http://cgi.ebay.com/ebaymotors/TT1E-TUNE-TRAPPER-HIDDEN-AM-FM-ANTENNA_W0QQitemZ8032351006QQcategoryZ38655QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

I also found a boat one that uses clear tape, but costs just a little more:

http://www.shakespeare-marine.com/antennas/specs/4353ant.htm

Any opinons on either? I plan to mount it behind the rear view mirror tucked up against the trim and painted black to hide it well.