Definitely the Glyde. It has a slide-out QWERTY keyboard, which is a top priority for me, and I just don't like the design of the Krazer. They both have a 2MP camera and a touch screen, so just go for the Samsung.
I've known samsung to be the brand to make some of the more reliable phones out there. Plus, the glyde has a qwerty keyboard which is a major preference for me. I'd say get the glyde.
Personally, I would go with something like a blackberry. Except they sometimes come with an extra $30 service plan monthly. From your two choices, I would go with the Glyde. But in a darker color.