I'm thinking about adding a sunroof to my Tacoma and ran across an electric vinyl roof panel that slides open made by the webasto company (top player in sunroofs). I've heard mixed thngs on these- leaks, noise, etc, but also that it's a great top. The idea is very appealing but it's a big step to have that huge hole cut. The noise is less an issue but leaks are another story- any experience with these?