The Glyde is smaller, lighter and cost less. The screen size are the same and for the most part so are the menus. The Voyager's screen is a pit fragile due to the type of display that is used, the Glyde is much more durable. Out of the box I feel that the touch is better on the Glyde and user will like the experience better than the Voyager. Voyager does have Media Flo for mobile TV and the Glyde doesn't. I feel that if you want the mobile TV the Voyager is better and if not the Glyde is.
I don't know, both phones are good phones, I like Samsung over LG though. However, I tried the Glyde and you have to push harder for it to recognize your touch, with the sensitivity level put on high and you can't use your nails. The voyager is probably easier to use with the touch screen, but I still like the Glyde better, but I found myself pushing the wrong buttons a lot. I tried it at Verizon today and preferred it over the Voyager though, which I use all the time because my friend has it. The Glyde is smaller, and easier to text with if you have small hands; the voyager's QWERTY keyboard is hard for me to use because i can't reach the buttons in the middle of the phone. It's also cheaper.