Hi,
In MHO The weathertech guards are above and beyond the others. I have used them B4 on my '99 tahoe, '05 Silverado, & now my '04 ES330.
They are IN the window channel and do not interfere with the Glass at all. I have the light smoke tint and they look and perform excellent!
nice to open the window a couple of inches on a rainy day without having to wipe down the back seats when u get where you r going!
Hope this helps.
Bud